/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#include "TestHarness.h"

#include "nsITransactionManager.h"
#include "nsComponentManagerUtils.h"
#include "mozilla/Likely.h"

static int32_t sConstructorCount     = 0;
static int32_t sDestructorCount      = 0;
static int32_t *sDestructorOrderArr  = 0;
static int32_t sDoCount              = 0;
static int32_t *sDoOrderArr          = 0;
static int32_t sUndoCount            = 0;
static int32_t *sUndoOrderArr        = 0;
static int32_t sRedoCount            = 0;
static int32_t *sRedoOrderArr        = 0;

// #define ENABLE_DEBUG_PRINTFS 1

int32_t sSimpleTestDestructorOrderArr[] = {
          2,   3,   4,   5,   6,   7,   8,   9,  10,  11,  12,  13,  14,  15,
         16,  17,  18,  19,  20,  21,   1,  22,  23,  24,  25,  26,  27,  28,
         29,  30,  31,  42,  43,  44,  45,  46,  47,  48,  49,  50,  51,  52,
         53,  54,  55,  56,  57,  58,  59,  60,  61,  41,  40,  62,  39,  38,
         37,  36,  35,  34,  33,  32,  68,  63,  64,  65,  66,  67,  69,  71,
         70,  72,  73,  74,  75,  76,  77,  78,  79,  80,  81,  82,  83,  84,
         85,  86,  87,  88,  89,  90,  91,  92,  93,  94,  95,  96,  97,  98,
         99, 100, 101, 111, 110, 109, 108, 107, 106, 105, 104, 103, 102, 131,
        130, 129, 128, 127, 126, 125, 124, 123, 122, 121, 120, 119, 118, 117,
        116, 115, 114, 113, 112 };

int32_t sSimpleTestDoOrderArr[] = {
          1,   2,   3,   4,   5,   6,   7,   8,   9,  10,  11,  12,  13,  14,
         15,  16,  17,  18,  19,  20,  21,  22,  23,  24,  25,  26,  27,  28,
         29,  30,  31,  32,  33,  34,  35,  36,  37,  38,  39,  40,  41,  42,
         43,  44,  45,  46,  47,  48,  49,  50,  51,  52,  53,  54,  55,  56,
         57,  58,  59,  60,  61,  62,  63,  64,  65,  66,  67,  68,  69,  70,
         71,  72,  73,  74,  75,  76,  77,  78,  79,  80,  81,  82,  83,  84,
         85,  86,  87,  88,  89,  90,  91,  92,  93,  94,  95,  96,  97,  98,
         99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112,
        113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126,
        127, 128, 129, 130, 131 };

int32_t sSimpleTestUndoOrderArr[] = {
         41,  40,  39,  38,  62,  39,  38,  37,  69,  71,  70, 111, 110, 109,
        108, 107, 106, 105, 104, 103, 102, 131, 130, 129, 128, 127, 126, 125,
        124, 123, 122 };

static int32_t sSimpleTestRedoOrderArr[] = {
         38,  39,  70 };

int32_t sAggregateTestDestructorOrderArr[] = {
         14,  13,  12,  11,  10,   9,   8,  21,  20,  19,  18,  17,  16,  15,
         28,  27,  26,  25,  24,  23,  22,  35,  34,  33,  32,  31,  30,  29,
         42,  41,  40,  39,  38,  37,  36,  49,  48,  47,  46,  45,  44,  43,
         56,  55,  54,  53,  52,  51,  50,  63,  62,  61,  60,  59,  58,  57,
         70,  69,  68,  67,  66,  65,  64,  77,  76,  75,  74,  73,  72,  71,
         84,  83,  82,  81,  80,  79,  78,  91,  90,  89,  88,  87,  86,  85,
         98,  97,  96,  95,  94,  93,  92, 105, 104, 103, 102, 101, 100,  99,
        112, 111, 110, 109, 108, 107, 106, 119, 118, 117, 116, 115, 114, 113,
        126, 125, 124, 123, 122, 121, 120, 133, 132, 131, 130, 129, 128, 127,
        140, 139, 138, 137, 136, 135, 134, 147, 146, 145, 144, 143, 142, 141,
          7,   6,   5,   4,   3,   2,   1, 154, 153, 152, 151, 150, 149, 148,
        161, 160, 159, 158, 157, 156, 155, 168, 167, 166, 165, 164, 163, 162,
        175, 174, 173, 172, 171, 170, 169, 182, 181, 180, 179, 178, 177, 176,
        189, 188, 187, 186, 185, 184, 183, 196, 195, 194, 193, 192, 191, 190,
        203, 202, 201, 200, 199, 198, 197, 210, 209, 208, 207, 206, 205, 204,
        217, 216, 215, 214, 213, 212, 211, 294, 293, 292, 291, 290, 289, 288,
        301, 300, 299, 298, 297, 296, 295, 308, 307, 306, 305, 304, 303, 302,
        315, 314, 313, 312, 311, 310, 309, 322, 321, 320, 319, 318, 317, 316,
        329, 328, 327, 326, 325, 324, 323, 336, 335, 334, 333, 332, 331, 330,
        343, 342, 341, 340, 339, 338, 337, 350, 349, 348, 347, 346, 345, 344,
        357, 356, 355, 354, 353, 352, 351, 364, 363, 362, 361, 360, 359, 358,
        371, 370, 369, 368, 367, 366, 365, 378, 377, 376, 375, 374, 373, 372,
        385, 384, 383, 382, 381, 380, 379, 392, 391, 390, 389, 388, 387, 386,
        399, 398, 397, 396, 395, 394, 393, 406, 405, 404, 403, 402, 401, 400,
        413, 412, 411, 410, 409, 408, 407, 420, 419, 418, 417, 416, 415, 414,
        427, 426, 425, 424, 423, 422, 421, 287, 286, 285, 284, 283, 282, 281,
        280, 279, 278, 277, 276, 275, 274, 434, 433, 432, 431, 430, 429, 428,
        273, 272, 271, 270, 269, 268, 267, 266, 265, 264, 263, 262, 261, 260,
        259, 258, 257, 256, 255, 254, 253, 252, 251, 250, 249, 248, 247, 246,
        245, 244, 243, 242, 241, 240, 239, 238, 237, 236, 235, 234, 233, 232,
        231, 230, 229, 228, 227, 226, 225, 224, 223, 222, 221, 220, 219, 218,
        472, 471, 470, 441, 440, 439, 438, 437, 436, 435, 448, 447, 446, 445,
        444, 443, 442, 455, 454, 453, 452, 451, 450, 449, 462, 461, 460, 459,
        458, 457, 456, 469, 468, 467, 466, 465, 464, 463, 479, 478, 477, 476,
        475, 474, 473, 493, 492, 491, 490, 489, 488, 487, 486, 485, 484, 483,
        482, 481, 480, 496, 497, 495, 499, 500, 498, 494, 503, 504, 502, 506,
        507, 505, 501, 510, 511, 509, 513, 514, 512, 508, 517, 518, 516, 520,
        521, 519, 515, 524, 525, 523, 527, 528, 526, 522, 531, 532, 530, 534,
        535, 533, 529, 538, 539, 537, 541, 542, 540, 536, 545, 546, 544, 548,
        549, 547, 543, 552, 553, 551, 555, 556, 554, 550, 559, 560, 558, 562,
        563, 561, 557, 566, 567, 565, 569, 570, 568, 564, 573, 574, 572, 576,
        577, 575, 571, 580, 581, 579, 583, 584, 582, 578, 587, 588, 586, 590,
        591, 589, 585, 594, 595, 593, 597, 598, 596, 592, 601, 602, 600, 604,
        605, 603, 599, 608, 609, 607, 611, 612, 610, 606, 615, 616, 614, 618,
        619, 617, 613, 622, 623, 621, 625, 626, 624, 620, 629, 630, 628, 632,
        633, 631, 627, 640, 639, 638, 637, 636, 635, 634, 647, 646, 645, 644,
        643, 642, 641, 654, 653, 652, 651, 650, 649, 648, 661, 660, 659, 658,
        657, 656, 655, 668, 667, 666, 665, 664, 663, 662, 675, 674, 673, 672,
        671, 670, 669, 682, 681, 680, 679, 678, 677, 676, 689, 688, 687, 686,
        685, 684, 683, 696, 695, 694, 693, 692, 691, 690, 703, 702, 701, 700,
        699, 698, 697, 773, 772, 771, 770, 769, 768, 767, 766, 765, 764, 763,
        762, 761, 760, 759, 758, 757, 756, 755, 754, 753, 752, 751, 750, 749,
        748, 747, 746, 745, 744, 743, 742, 741, 740, 739, 738, 737, 736, 735,
        734, 733, 732, 731, 730, 729, 728, 727, 726, 725, 724, 723, 722, 721,
        720, 719, 718, 717, 716, 715, 714, 713, 712, 711, 710, 709, 708, 707,
        706, 705, 704, 913, 912, 911, 910, 909, 908, 907, 906, 905, 904, 903,
        902, 901, 900, 899, 898, 897, 896, 895, 894, 893, 892, 891, 890, 889,
        888, 887, 886, 885, 884, 883, 882, 881, 880, 879, 878, 877, 876, 875,
        874, 873, 872, 871, 870, 869, 868, 867, 866, 865, 864, 863, 862, 861,
        860, 859, 858, 857, 856, 855, 854, 853, 852, 851, 850, 849, 848, 847,
        846, 845, 844, 843, 842, 841, 840, 839, 838, 837, 836, 835, 834, 833,
        832, 831, 830, 829, 828, 827, 826, 825, 824, 823, 822, 821, 820, 819,
        818, 817, 816, 815, 814, 813, 812, 811, 810, 809, 808, 807, 806, 805,
        804, 803, 802, 801, 800, 799, 798, 797, 796, 795, 794, 793, 792, 791,
        790, 789, 788, 787, 786, 785, 784, 783, 782, 781, 780, 779, 778, 777,
        776, 775, 774 };

int32_t sAggregateTestDoOrderArr[] = {
          1,   2,   3,   4,   5,   6,   7,   8,   9,  10,  11,  12,  13,  14,
         15,  16,  17,  18,  19,  20,  21,  22,  23,  24,  25,  26,  27,  28,
         29,  30,  31,  32,  33,  34,  35,  36,  37,  38,  39,  40,  41,  42,
         43,  44,  45,  46,  47,  48,  49,  50,  51,  52,  53,  54,  55,  56,
         57,  58,  59,  60,  61,  62,  63,  64,  65,  66,  67,  68,  69,  70,
         71,  72,  73,  74,  75,  76,  77,  78,  79,  80,  81,  82,  83,  84,
         85,  86,  87,  88,  89,  90,  91,  92,  93,  94,  95,  96,  97,  98,
         99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112,
        113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126,
        127, 128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140,
        141, 142, 143, 144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154,
        155, 156, 157, 158, 159, 160, 161, 162, 163, 164, 165, 166, 167, 168,
        169, 170, 171, 172, 173, 174, 175, 176, 177, 178, 179, 180, 181, 182,
        183, 184, 185, 186, 187, 188, 189, 190, 191, 192, 193, 194, 195, 196,
        197, 198, 199, 200, 201, 202, 203, 204, 205, 206, 207, 208, 209, 210,
        211, 212, 213, 214, 215, 216, 217, 218, 219, 220, 221, 222, 223, 224,
        225, 226, 227, 228, 229, 230, 231, 232, 233, 234, 235, 236, 237, 238,
        239, 240, 241, 242, 243, 244, 245, 246, 247, 248, 249, 250, 251, 252,
        253, 254, 255, 256, 257, 258, 259, 260, 261, 262, 263, 264, 265, 266,
        267, 268, 269, 270, 271, 272, 273, 274, 275, 276, 277, 278, 279, 280,
        281, 282, 283, 284, 285, 286, 287, 288, 289, 290, 291, 292, 293, 294,
        295, 296, 297, 298, 299, 300, 301, 302, 303, 304, 305, 306, 307, 308,
        309, 310, 311, 312, 313, 314, 315, 316, 317, 318, 319, 320, 321, 322,
        323, 324, 325, 326, 327, 328, 329, 330, 331, 332, 333, 334, 335, 336,
        337, 338, 339, 340, 341, 342, 343, 344, 345, 346, 347, 348, 349, 350,
        351, 352, 353, 354, 355, 356, 357, 358, 359, 360, 361, 362, 363, 364,
        365, 366, 367, 368, 369, 370, 371, 372, 373, 374, 375, 376, 377, 378,
        379, 380, 381, 382, 383, 384, 385, 386, 387, 388, 389, 390, 391, 392,
        393, 394, 395, 396, 397, 398, 399, 400, 401, 402, 403, 404, 405, 406,
        407, 408, 409, 410, 411, 412, 413, 414, 415, 416, 417, 418, 419, 420,
        421, 422, 423, 424, 425, 426, 427, 428, 429, 430, 431, 432, 433, 434,
        435, 436, 437, 438, 439, 440, 441, 442, 443, 444, 445, 446, 447, 448,
        449, 450, 451, 452, 453, 454, 455, 456, 457, 458, 459, 460, 461, 462,
        463, 464, 465, 466, 467, 468, 469, 470, 471, 472, 473, 474, 475, 476,
        477, 478, 479, 480, 481, 482, 483, 484, 485, 486, 487, 488, 489, 490,
        491, 492, 493, 494, 495, 496, 497, 498, 499, 500, 501, 502, 503, 504,
        505, 506, 507, 508, 509, 510, 511, 512, 513, 514, 515, 516, 517, 518,
        519, 520, 521, 522, 523, 524, 525, 526, 527, 528, 529, 530, 531, 532,
        533, 534, 535, 536, 537, 538, 539, 540, 541, 542, 543, 544, 545, 546,
        547, 548, 549, 550, 551, 552, 553, 554, 555, 556, 557, 558, 559, 560,
        561, 562, 563, 564, 565, 566, 567, 568, 569, 570, 571, 572, 573, 574,
        575, 576, 577, 578, 579, 580, 581, 582, 583, 584, 585, 586, 587, 588,
        589, 590, 591, 592, 593, 594, 595, 596, 597, 598, 599, 600, 601, 602,
        603, 604, 605, 606, 607, 608, 609, 610, 611, 612, 613, 614, 615, 616,
        617, 618, 619, 620, 621, 622, 623, 624, 625, 626, 627, 628, 629, 630,
        631, 632, 633, 634, 635, 636, 637, 638, 639, 640, 641, 642, 643, 644,
        645, 646, 647, 648, 649, 650, 651, 652, 653, 654, 655, 656, 657, 658,
        659, 660, 661, 662, 663, 664, 665, 666, 667, 668, 669, 670, 671, 672,
        673, 674, 675, 676, 677, 678, 679, 680, 681, 682, 683, 684, 685, 686,
        687, 688, 689, 690, 691, 692, 693, 694, 695, 696, 697, 698, 699, 700,
        701, 702, 703, 704, 705, 706, 707, 708, 709, 710, 711, 712, 713, 714,
        715, 716, 717, 718, 719, 720, 721, 722, 723, 724, 725, 726, 727, 728,
        729, 730, 731, 732, 733, 734, 735, 736, 737, 738, 739, 740, 741, 742,
        743, 744, 745, 746, 747, 748, 749, 750, 751, 752, 753, 754, 755, 756,
        757, 758, 759, 760, 761, 762, 763, 764, 765, 766, 767, 768, 769, 770,
        771, 772, 773, 774, 775, 776, 777, 778, 779, 780, 781, 782, 783, 784,
        785, 786, 787, 788, 789, 790, 791, 792, 793, 794, 795, 796, 797, 798,
        799, 800, 801, 802, 803, 804, 805, 806, 807, 808, 809, 810, 811, 812,
        813, 814, 815, 816, 817, 818, 819, 820, 821, 822, 823, 824, 825, 826,
        827, 828, 829, 830, 831, 832, 833, 834, 835, 836, 837, 838, 839, 840,
        841, 842, 843, 844, 845, 846, 847, 848, 849, 850, 851, 852, 853, 854,
        855, 856, 857, 858, 859, 860, 861, 862, 863, 864, 865, 866, 867, 868,
        869, 870, 871, 872, 873, 874, 875, 876, 877, 878, 879, 880, 881, 882,
        883, 884, 885, 886, 887, 888, 889, 890, 891, 892, 893, 894, 895, 896,
        897, 898, 899, 900, 901, 902, 903, 904, 905, 906, 907, 908, 909, 910,
        911, 912, 913 };

int32_t sAggregateTestUndoOrderArr[] = {
        287, 286, 285, 284, 283, 282, 281, 280, 279, 278, 277, 276, 275, 274,
        273, 272, 271, 270, 269, 268, 267, 266, 265, 264, 263, 262, 261, 260,
        434, 433, 432, 431, 430, 429, 428, 273, 272, 271, 270, 269, 268, 267,
        266, 265, 264, 263, 262, 261, 260, 259, 258, 257, 256, 255, 254, 253,
        479, 478, 477, 476, 475, 493, 492, 491, 490, 489, 488, 487, 486, 485,
        484, 483, 482, 481, 480, 485, 484, 483, 482, 481, 480, 773, 772, 771,
        770, 769, 768, 767, 766, 765, 764, 763, 762, 761, 760, 759, 758, 757,
        756, 755, 754, 753, 752, 751, 750, 749, 748, 747, 746, 745, 744, 743,
        742, 741, 740, 739, 738, 737, 736, 735, 734, 733, 732, 731, 730, 729,
        728, 727, 726, 725, 724, 723, 722, 721, 720, 719, 718, 717, 716, 715,
        714, 713, 712, 711, 710, 709, 708, 707, 706, 705, 704, 913, 912, 911,
        910, 909, 908, 907, 906, 905, 904, 903, 902, 901, 900, 899, 898, 897,
        896, 895, 894, 893, 892, 891, 890, 889, 888, 887, 886, 885, 884, 883,
        882, 881, 880, 879, 878, 877, 876, 875, 874, 873, 872, 871, 870, 869,
        868, 867, 866, 865, 864, 863, 862, 861, 860, 859, 858, 857, 856, 855,
        854, 853, 852, 851, 850, 849, 848, 847, 846, 845, 844 };

int32_t sAggregateTestRedoOrderArr[] = {
        260, 261, 262, 263, 264, 265, 266, 267, 268, 269, 270, 271, 272, 273,
        476, 477, 478, 479, 480, 481, 482, 483, 484, 485, 486 };

int32_t sSimpleBatchTestDestructorOrderArr[] = {
         21,  22,  23,  24,  25,  26,  27,  28,  29,  30,  31,  32,  33,  34,
         35,  36,  37,  38,  39,  40,  43,  42,  41,  64,  63,  62,  61,  60,
         59,  58,  57,  56,  55,  54,  53,  52,  51,  50,  49,  48,  47,  46,
         45,  44,  20,  19,  18,  17,  16,  15,  14,  13,  12,  11,  10,   9,
          8,   7,   6,   5,   4,   3,   2,   1,  65,  67,  66,  68,  69,  70,
         71,  72,  73,  74,  75,  76,  77,  78,  79,  80,  81,  82,  83,  84,
         85,  86,  87, 107, 106, 105, 104, 103, 102, 101, 100,  99,  98,  97,
         96,  95,  94,  93,  92,  91,  90,  89,  88 };

int32_t sSimpleBatchTestDoOrderArr[] = {
          1,   2,   3,   4,   5,   6,   7,   8,   9,  10,  11,  12,  13,  14,
         15,  16,  17,  18,  19,  20,  21,  22,  23,  24,  25,  26,  27,  28,
         29,  30,  31,  32,  33,  34,  35,  36,  37,  38,  39,  40,  41,  42,
         43,  44,  45,  46,  47,  48,  49,  50,  51,  52,  53,  54,  55,  56,
         57,  58,  59,  60,  61,  62,  63,  64,  65,  66,  67,  68,  69,  70,
         71,  72,  73,  74,  75,  76,  77,  78,  79,  80,  81,  82,  83,  84,
         85,  86,  87,  88,  89,  90,  91,  92,  93,  94,  95,  96,  97,  98,
         99, 100, 101, 102, 103, 104, 105, 106, 107 };

int32_t sSimpleBatchTestUndoOrderArr[] = {
         43,  42,  41,  20,  19,  18,  17,  16,  15,  14,  13,  12,  11,  10,
          9,   8,   7,   6,   5,   4,   3,   2,   1,  43,  42,  41,  63,  62,
         61,  60,  59,  58,  57,  56,  55,  54,  53,  52,  51,  50,  49,  48,
         47,  46,  45,  44,  65,  67,  66, 107, 106, 105, 104, 103, 102, 101,
        100,  99,  98 };

int32_t sSimpleBatchTestRedoOrderArr[] = {
          1,   2,   3,   4,   5,   6,   7,   8,   9,  10,  11,  12,  13,  14,
         15,  16,  17,  18,  19,  20,  41,  42,  43,  66 };

int32_t sAggregateBatchTestDestructorOrderArr[] = {
        147, 146, 145, 144, 143, 142, 141, 154, 153, 152, 151, 150, 149, 148,
        161, 160, 159, 158, 157, 156, 155, 168, 167, 166, 165, 164, 163, 162,
        175, 174, 173, 172, 171, 170, 169, 182, 181, 180, 179, 178, 177, 176,
        189, 188, 187, 186, 185, 184, 183, 196, 195, 194, 193, 192, 191, 190,
        203, 202, 201, 200, 199, 198, 197, 210, 209, 208, 207, 206, 205, 204,
        217, 216, 215, 214, 213, 212, 211, 224, 223, 222, 221, 220, 219, 218,
        231, 230, 229, 228, 227, 226, 225, 238, 237, 236, 235, 234, 233, 232,
        245, 244, 243, 242, 241, 240, 239, 252, 251, 250, 249, 248, 247, 246,
        259, 258, 257, 256, 255, 254, 253, 266, 265, 264, 263, 262, 261, 260,
        273, 272, 271, 270, 269, 268, 267, 280, 279, 278, 277, 276, 275, 274,
        301, 300, 299, 298, 297, 296, 295, 294, 293, 292, 291, 290, 289, 288,
        287, 286, 285, 284, 283, 282, 281, 444, 443, 442, 441, 440, 439, 438,
        437, 436, 435, 434, 433, 432, 431, 430, 429, 428, 427, 426, 425, 424,
        423, 422, 421, 420, 419, 418, 417, 416, 415, 414, 413, 412, 411, 410,
        409, 408, 407, 406, 405, 404, 403, 402, 401, 400, 399, 398, 397, 396,
        395, 394, 393, 392, 391, 390, 389, 388, 387, 386, 385, 384, 383, 382,
        381, 380, 379, 378, 377, 376, 375, 374, 373, 372, 371, 370, 369, 368,
        367, 366, 365, 364, 363, 362, 361, 360, 359, 358, 357, 356, 355, 354,
        353, 352, 351, 350, 349, 348, 347, 346, 345, 344, 343, 342, 341, 340,
        339, 338, 337, 336, 335, 334, 333, 332, 331, 330, 329, 328, 327, 326,
        325, 324, 323, 322, 321, 320, 319, 318, 317, 316, 315, 314, 313, 312,
        311, 310, 309, 308, 307, 306, 305, 304, 303, 302, 140, 139, 138, 137,
        136, 135, 134, 133, 132, 131, 130, 129, 128, 127, 126, 125, 124, 123,
        122, 121, 120, 119, 118, 117, 116, 115, 114, 113, 112, 111, 110, 109,
        108, 107, 106, 105, 104, 103, 102, 101, 100,  99,  98,  97,  96,  95,
         94,  93,  92,  91,  90,  89,  88,  87,  86,  85,  84,  83,  82,  81,
         80,  79,  78,  77,  76,  75,  74,  73,  72,  71,  70,  69,  68,  67,
         66,  65,  64,  63,  62,  61,  60,  59,  58,  57,  56,  55,  54,  53,
         52,  51,  50,  49,  48,  47,  46,  45,  44,  43,  42,  41,  40,  39,
         38,  37,  36,  35,  34,  33,  32,  31,  30,  29,  28,  27,  26,  25,
         24,  23,  22,  21,  20,  19,  18,  17,  16,  15,  14,  13,  12,  11,
         10,   9,   8,   7,   6,   5,   4,   3,   2,   1, 451, 450, 449, 448,
        447, 446, 445, 465, 464, 463, 462, 461, 460, 459, 458, 457, 456, 455,
        454, 453, 452, 468, 469, 467, 471, 472, 470, 466, 475, 476, 474, 478,
        479, 477, 473, 482, 483, 481, 485, 486, 484, 480, 489, 490, 488, 492,
        493, 491, 487, 496, 497, 495, 499, 500, 498, 494, 503, 504, 502, 506,
        507, 505, 501, 510, 511, 509, 513, 514, 512, 508, 517, 518, 516, 520,
        521, 519, 515, 524, 525, 523, 527, 528, 526, 522, 531, 532, 530, 534,
        535, 533, 529, 538, 539, 537, 541, 542, 540, 536, 545, 546, 544, 548,
        549, 547, 543, 552, 553, 551, 555, 556, 554, 550, 559, 560, 558, 562,
        563, 561, 557, 566, 567, 565, 569, 570, 568, 564, 573, 574, 572, 576,
        577, 575, 571, 580, 581, 579, 583, 584, 582, 578, 587, 588, 586, 590,
        591, 589, 585, 594, 595, 593, 597, 598, 596, 592, 601, 602, 600, 604,
        605, 603, 599, 745, 744, 743, 742, 741, 740, 739, 738, 737, 736, 735,
        734, 733, 732, 731, 730, 729, 728, 727, 726, 725, 724, 723, 722, 721,
        720, 719, 718, 717, 716, 715, 714, 713, 712, 711, 710, 709, 708, 707,
        706, 705, 704, 703, 702, 701, 700, 699, 698, 697, 696, 695, 694, 693,
        692, 691, 690, 689, 688, 687, 686, 685, 684, 683, 682, 681, 680, 679,
        678, 677, 676, 675, 674, 673, 672, 671, 670, 669, 668, 667, 666, 665,
        664, 663, 662, 661, 660, 659, 658, 657, 656, 655, 654, 653, 652, 651,
        650, 649, 648, 647, 646, 645, 644, 643, 642, 641, 640, 639, 638, 637,
        636, 635, 634, 633, 632, 631, 630, 629, 628, 627, 626, 625, 624, 623,
        622, 621, 620, 619, 618, 617, 616, 615, 614, 613, 612, 611, 610, 609,
        608, 607, 606 };

int32_t sAggregateBatchTestDoOrderArr[] = {
          1,   2,   3,   4,   5,   6,   7,   8,   9,  10,  11,  12,  13,  14,
         15,  16,  17,  18,  19,  20,  21,  22,  23,  24,  25,  26,  27,  28,
         29,  30,  31,  32,  33,  34,  35,  36,  37,  38,  39,  40,  41,  42,
         43,  44,  45,  46,  47,  48,  49,  50,  51,  52,  53,  54,  55,  56,
         57,  58,  59,  60,  61,  62,  63,  64,  65,  66,  67,  68,  69,  70,
         71,  72,  73,  74,  75,  76,  77,  78,  79,  80,  81,  82,  83,  84,
         85,  86,  87,  88,  89,  90,  91,  92,  93,  94,  95,  96,  97,  98,
         99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112,
        113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126,
        127, 128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140,
        141, 142, 143, 144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154,
        155, 156, 157, 158, 159, 160, 161, 162, 163, 164, 165, 166, 167, 168,
        169, 170, 171, 172, 173, 174, 175, 176, 177, 178, 179, 180, 181, 182,
        183, 184, 185, 186, 187, 188, 189, 190, 191, 192, 193, 194, 195, 196,
        197, 198, 199, 200, 201, 202, 203, 204, 205, 206, 207, 208, 209, 210,
        211, 212, 213, 214, 215, 216, 217, 218, 219, 220, 221, 222, 223, 224,
        225, 226, 227, 228, 229, 230, 231, 232, 233, 234, 235, 236, 237, 238,
        239, 240, 241, 242, 243, 244, 245, 246, 247, 248, 249, 250, 251, 252,
        253, 254, 255, 256, 257, 258, 259, 260, 261, 262, 263, 264, 265, 266,
        267, 268, 269, 270, 271, 272, 273, 274, 275, 276, 277, 278, 279, 280,
        281, 282, 283, 284, 285, 286, 287, 288, 289, 290, 291, 292, 293, 294,
        295, 296, 297, 298, 299, 300, 301, 302, 303, 304, 305, 306, 307, 308,
        309, 310, 311, 312, 313, 314, 315, 316, 317, 318, 319, 320, 321, 322,
        323, 324, 325, 326, 327, 328, 329, 330, 331, 332, 333, 334, 335, 336,
        337, 338, 339, 340, 341, 342, 343, 344, 345, 346, 347, 348, 349, 350,
        351, 352, 353, 354, 355, 356, 357, 358, 359, 360, 361, 362, 363, 364,
        365, 366, 367, 368, 369, 370, 371, 372, 373, 374, 375, 376, 377, 378,
        379, 380, 381, 382, 383, 384, 385, 386, 387, 388, 389, 390, 391, 392,
        393, 394, 395, 396, 397, 398, 399, 400, 401, 402, 403, 404, 405, 406,
        407, 408, 409, 410, 411, 412, 413, 414, 415, 416, 417, 418, 419, 420,
        421, 422, 423, 424, 425, 426, 427, 428, 429, 430, 431, 432, 433, 434,
        435, 436, 437, 438, 439, 440, 441, 442, 443, 444, 445, 446, 447, 448,
        449, 450, 451, 452, 453, 454, 455, 456, 457, 458, 459, 460, 461, 462,
        463, 464, 465, 466, 467, 468, 469, 470, 471, 472, 473, 474, 475, 476,
        477, 478, 479, 480, 481, 482, 483, 484, 485, 486, 487, 488, 489, 490,
        491, 492, 493, 494, 495, 496, 497, 498, 499, 500, 501, 502, 503, 504,
        505, 506, 507, 508, 509, 510, 511, 512, 513, 514, 515, 516, 517, 518,
        519, 520, 521, 522, 523, 524, 525, 526, 527, 528, 529, 530, 531, 532,
        533, 534, 535, 536, 537, 538, 539, 540, 541, 542, 543, 544, 545, 546,
        547, 548, 549, 550, 551, 552, 553, 554, 555, 556, 557, 558, 559, 560,
        561, 562, 563, 564, 565, 566, 567, 568, 569, 570, 571, 572, 573, 574,
        575, 576, 577, 578, 579, 580, 581, 582, 583, 584, 585, 586, 587, 588,
        589, 590, 591, 592, 593, 594, 595, 596, 597, 598, 599, 600, 601, 602,
        603, 604, 605, 606, 607, 608, 609, 610, 611, 612, 613, 614, 615, 616,
        617, 618, 619, 620, 621, 622, 623, 624, 625, 626, 627, 628, 629, 630,
        631, 632, 633, 634, 635, 636, 637, 638, 639, 640, 641, 642, 643, 644,
        645, 646, 647, 648, 649, 650, 651, 652, 653, 654, 655, 656, 657, 658,
        659, 660, 661, 662, 663, 664, 665, 666, 667, 668, 669, 670, 671, 672,
        673, 674, 675, 676, 677, 678, 679, 680, 681, 682, 683, 684, 685, 686,
        687, 688, 689, 690, 691, 692, 693, 694, 695, 696, 697, 698, 699, 700,
        701, 702, 703, 704, 705, 706, 707, 708, 709, 710, 711, 712, 713, 714,
        715, 716, 717, 718, 719, 720, 721, 722, 723, 724, 725, 726, 727, 728,
        729, 730, 731, 732, 733, 734, 735, 736, 737, 738, 739, 740, 741, 742,
        743, 744, 745 };

int32_t sAggregateBatchTestUndoOrderArr[] = {
        301, 300, 299, 298, 297, 296, 295, 294, 293, 292, 291, 290, 289, 288,
        287, 286, 285, 284, 283, 282, 281, 140, 139, 138, 137, 136, 135, 134,
        133, 132, 131, 130, 129, 128, 127, 126, 125, 124, 123, 122, 121, 120,
        119, 118, 117, 116, 115, 114, 113, 112, 111, 110, 109, 108, 107, 106,
        105, 104, 103, 102, 101, 100,  99,  98,  97,  96,  95,  94,  93,  92,
         91,  90,  89,  88,  87,  86,  85,  84,  83,  82,  81,  80,  79,  78,
         77,  76,  75,  74,  73,  72,  71,  70,  69,  68,  67,  66,  65,  64,
         63,  62,  61,  60,  59,  58,  57,  56,  55,  54,  53,  52,  51,  50,
         49,  48,  47,  46,  45,  44,  43,  42,  41,  40,  39,  38,  37,  36,
         35,  34,  33,  32,  31,  30,  29,  28,  27,  26,  25,  24,  23,  22,
         21,  20,  19,  18,  17,  16,  15,  14,  13,  12,  11,  10,   9,   8,
          7,   6,   5,   4,   3,   2,   1, 301, 300, 299, 298, 297, 296, 295,
        294, 293, 292, 291, 290, 289, 288, 287, 286, 285, 284, 283, 282, 281,
        441, 440, 439, 438, 437, 436, 435, 434, 433, 432, 431, 430, 429, 428,
        427, 426, 425, 424, 423, 422, 421, 420, 419, 418, 417, 416, 415, 414,
        413, 412, 411, 410, 409, 408, 407, 406, 405, 404, 403, 402, 401, 400,
        399, 398, 397, 396, 395, 394, 393, 392, 391, 390, 389, 388, 387, 386,
        385, 384, 383, 382, 381, 380, 379, 378, 377, 376, 375, 374, 373, 372,
        371, 370, 369, 368, 367, 366, 365, 364, 363, 362, 361, 360, 359, 358,
        357, 356, 355, 354, 353, 352, 351, 350, 349, 348, 347, 346, 345, 344,
        343, 342, 341, 340, 339, 338, 337, 336, 335, 334, 333, 332, 331, 330,
        329, 328, 327, 326, 325, 324, 323, 322, 321, 320, 319, 318, 317, 316,
        315, 314, 313, 312, 311, 310, 309, 308, 307, 306, 305, 304, 303, 302,
        451, 450, 449, 448, 447, 465, 464, 463, 462, 461, 460, 459, 458, 457,
        456, 455, 454, 453, 452, 457, 456, 455, 454, 453, 452, 745, 744, 743,
        742, 741, 740, 739, 738, 737, 736, 735, 734, 733, 732, 731, 730, 729,
        728, 727, 726, 725, 724, 723, 722, 721, 720, 719, 718, 717, 716, 715,
        714, 713, 712, 711, 710, 709, 708, 707, 706, 705, 704, 703, 702, 701,
        700, 699, 698, 697, 696, 695, 694, 693, 692, 691, 690, 689, 688, 687,
        686, 685, 684, 683, 682, 681, 680, 679, 678, 677, 676 };

int32_t sAggregateBatchTestRedoOrderArr[] = {
          1,   2,   3,   4,   5,   6,   7,   8,   9,  10,  11,  12,  13,  14,
         15,  16,  17,  18,  19,  20,  21,  22,  23,  24,  25,  26,  27,  28,
         29,  30,  31,  32,  33,  34,  35,  36,  37,  38,  39,  40,  41,  42,
         43,  44,  45,  46,  47,  48,  49,  50,  51,  52,  53,  54,  55,  56,
         57,  58,  59,  60,  61,  62,  63,  64,  65,  66,  67,  68,  69,  70,
         71,  72,  73,  74,  75,  76,  77,  78,  79,  80,  81,  82,  83,  84,
         85,  86,  87,  88,  89,  90,  91,  92,  93,  94,  95,  96,  97,  98,
         99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112,
        113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126,
        127, 128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140,
        281, 282, 283, 284, 285, 286, 287, 288, 289, 290, 291, 292, 293, 294,
        295, 296, 297, 298, 299, 300, 301, 448, 449, 450, 451, 452, 453, 454,
        455, 456, 457, 458 };

#define TEST_TXMGR_IF_RELEASE(tx) if (tx) tx->Release(); // Release but don't clear pointer!

class TestTransaction : public nsITransaction
{
protected:
  virtual ~TestTransaction() {}

public:

  TestTransaction() {}

  NS_DECL_ISUPPORTS
};

NS_IMPL_ISUPPORTS(TestTransaction, nsITransaction)

class SimpleTransaction : public TestTransaction
{
protected:

#define NONE_FLAG               0
#define THROWS_DO_ERROR_FLAG    1
#define THROWS_UNDO_ERROR_FLAG  2
#define THROWS_REDO_ERROR_FLAG  4
#define MERGE_FLAG              8
#define TRANSIENT_FLAG         16
#define BATCH_FLAG             32
#define ALL_ERROR_FLAGS        (THROWS_DO_ERROR_FLAG|THROWS_UNDO_ERROR_FLAG|THROWS_REDO_ERROR_FLAG)

  int32_t mVal;
  int32_t mFlags;

public:

  explicit SimpleTransaction(int32_t aFlags=NONE_FLAG)
    : mVal(++sConstructorCount), mFlags(aFlags)
  {}

  virtual ~SimpleTransaction()
  {
    //
    // Make sure transactions are being destroyed in the order we expect!
    // Notice that we don't check to see if we go past the end of the array.
    // This is done on purpose since we want to crash if the order array is out
    // of date.
    //
    /* Disabled because the current cycle collector doesn't delete
       cycle collectable objects synchronously, nor doesn't guarantee any order.
    if (sDestructorOrderArr && mVal != sDestructorOrderArr[sDestructorCount]) {
      fail("~SimpleTransaction expected %d got %d.\n",
           mVal, sDestructorOrderArr[sDestructorCount]);
      exit(-1);
    }
    */

    ++sDestructorCount;

#ifdef ENABLE_DEBUG_PRINTFS
    printf("\n~SimpleTransaction: %d - 0x%.8x\n", mVal, (int32_t)this);
#endif // ENABLE_DEBUG_PRINTFS

    mVal = -1;
  }

  NS_IMETHOD DoTransaction()
  {
    //
    // Make sure DoTransaction() is called in the order we expect!
    // Notice that we don't check to see if we go past the end of the array.
    // This is done on purpose since we want to crash if the order array is out
    // of date.
    //
    if (sDoOrderArr && mVal != sDoOrderArr[sDoCount]) {
      fail("DoTransaction expected %d got %d.\n",
           mVal, sDoOrderArr[sDoCount]);
      exit(-1);
    }

    ++sDoCount;

#ifdef ENABLE_DEBUG_PRINTFS
    printf("\nSimpleTransaction.DoTransaction: %d - 0x%.8x\n", mVal, (int32_t)this);
#endif // ENABLE_DEBUG_PRINTFS

    return (mFlags & THROWS_DO_ERROR_FLAG) ? NS_ERROR_FAILURE : NS_OK;
  }

  NS_IMETHOD UndoTransaction()
  {
    //
    // Make sure UndoTransaction() is called in the order we expect!
    // Notice that we don't check to see if we go past the end of the array.
    // This is done on purpose since we want to crash if the order array is out
    // of date.
    //
    if (sUndoOrderArr && mVal != sUndoOrderArr[sUndoCount]) {
      fail("UndoTransaction expected %d got %d.\n",
           mVal, sUndoOrderArr[sUndoCount]);
      exit(-1);
    }

    ++sUndoCount;

#ifdef ENABLE_DEBUG_PRINTFS
    printf("\nSimpleTransaction.Undo: %d - 0x%.8x\n", mVal, (int32_t)this);
#endif // ENABLE_DEBUG_PRINTFS

    return (mFlags & THROWS_UNDO_ERROR_FLAG) ? NS_ERROR_FAILURE : NS_OK;
  }

  NS_IMETHOD RedoTransaction()
  {
    //
    // Make sure RedoTransaction() is called in the order we expect!
    // Notice that we don't check to see if we go past the end of the array.
    // This is done on purpose since we want to crash if the order array is out
    // of date.
    //
    if (sRedoOrderArr && mVal != sRedoOrderArr[sRedoCount]) {
      fail("RedoTransaction expected %d got %d.\n",
           mVal, sRedoOrderArr[sRedoCount]);
      exit(-1);
    }

    ++sRedoCount;

#ifdef ENABLE_DEBUG_PRINTFS
    printf("\nSimpleTransaction.Redo: %d - 0x%.8x\n", mVal, (int32_t)this);
#endif // ENABLE_DEBUG_PRINTFS

    return (mFlags & THROWS_REDO_ERROR_FLAG) ? NS_ERROR_FAILURE : NS_OK;
  }

  NS_IMETHOD GetIsTransient(bool *aIsTransient)
  {
    if (aIsTransient) {
      *aIsTransient = (mFlags & TRANSIENT_FLAG) ? true : false;
    }
    return NS_OK;
  }

  NS_IMETHOD Merge(nsITransaction *aTransaction, bool *aDidMerge)
  {
    if (aDidMerge) {
      *aDidMerge = (mFlags & MERGE_FLAG) ? true : false;
    }
    return NS_OK;
  }
};

class AggregateTransaction : public SimpleTransaction
{
private:

  AggregateTransaction(nsITransactionManager *aTXMgr, int32_t aLevel,
                       int32_t aNumber, int32_t aMaxLevel,
                       int32_t aNumChildrenPerNode,
                       int32_t aFlags)
  {
    mLevel              = aLevel;
    mNumber             = aNumber;
    mTXMgr              = aTXMgr;
    mFlags              = aFlags & (~ALL_ERROR_FLAGS);
    mErrorFlags         = aFlags & ALL_ERROR_FLAGS;
    mTXMgr              = aTXMgr;
    mMaxLevel           = aMaxLevel;
    mNumChildrenPerNode = aNumChildrenPerNode;
  }

  nsITransactionManager *mTXMgr;

  int32_t mLevel;
  int32_t mNumber;
  int32_t mErrorFlags;

  int32_t mMaxLevel;
  int32_t mNumChildrenPerNode;

public:

  AggregateTransaction(nsITransactionManager *aTXMgr,
                       int32_t aMaxLevel, int32_t aNumChildrenPerNode,
                       int32_t aFlags=NONE_FLAG)
  {
    mLevel              = 1;
    mNumber             = 1;
    mFlags              = aFlags & (~ALL_ERROR_FLAGS);
    mErrorFlags         = aFlags & ALL_ERROR_FLAGS;
    mTXMgr              = aTXMgr;
    mMaxLevel           = aMaxLevel;
    mNumChildrenPerNode = aNumChildrenPerNode;
  }

  virtual ~AggregateTransaction()
  {
    // printf("~AggregateTransaction(0x%.8x) - %3d (%3d)\n", this, mLevel, mVal);
  }

  NS_IMETHOD DoTransaction()
  {
    if (mLevel >= mMaxLevel) {
      // Only leaf nodes can throw errors!
      mFlags |= mErrorFlags;
    }

    nsresult rv = SimpleTransaction::DoTransaction();
    if (NS_FAILED(rv)) {
      // fail("QueryInterface() failed for transaction level %d. (%d)\n",
      //      mLevel, rv);
      return rv;
    }

    if (mLevel >= mMaxLevel) {
      return NS_OK;
    }

    if (mFlags & BATCH_FLAG) {
      rv = mTXMgr->BeginBatch(nullptr);
      if (NS_FAILED(rv)) {
        return rv;
      }
    }

    int32_t cLevel = mLevel + 1;

    for (int i = 1; i <= mNumChildrenPerNode; i++) {
      int32_t flags = mErrorFlags & THROWS_DO_ERROR_FLAG;

      if ((mErrorFlags & THROWS_REDO_ERROR_FLAG) && i == mNumChildrenPerNode) {
        // Make the rightmost leaf transaction throw the error!
        flags = THROWS_REDO_ERROR_FLAG;
        mErrorFlags = mErrorFlags & (~THROWS_REDO_ERROR_FLAG);
      } else if ((mErrorFlags & THROWS_UNDO_ERROR_FLAG) && i == 1) {
        // Make the leftmost leaf transaction throw the error!
        flags = THROWS_UNDO_ERROR_FLAG;
        mErrorFlags = mErrorFlags & (~THROWS_UNDO_ERROR_FLAG);
      }

      flags |= mFlags & BATCH_FLAG;

      AggregateTransaction *tximpl =
              new AggregateTransaction(mTXMgr, cLevel, i, mMaxLevel,
                                       mNumChildrenPerNode, flags);

      if (!tximpl) {
        fail("Failed to allocate AggregateTransaction %d, level %d. (%d)\n",
             i, mLevel, rv);

        if (mFlags & BATCH_FLAG) {
          mTXMgr->EndBatch(false);
        }

        return NS_ERROR_OUT_OF_MEMORY;
      }

      nsITransaction *tx = 0;
      rv = tximpl->QueryInterface(NS_GET_IID(nsITransaction), (void **)&tx);
      if (NS_FAILED(rv)) {
        fail("QueryInterface() failed for transaction %d, level %d. (%d)\n",
             i, mLevel, rv);

        if (mFlags & BATCH_FLAG) {
          mTXMgr->EndBatch(false);
        }
        return rv;
      }

      rv = mTXMgr->DoTransaction(tx);
      if (NS_FAILED(rv)) {
        // fail("Failed to execute transaction %d, level %d. (%d)\n",
        //      i, mLevel, rv);
        tx->Release();
        if (mFlags & BATCH_FLAG) {
          mTXMgr->EndBatch(false);
        }
        return rv;
      }
      tx->Release();
    }

    if (mFlags & BATCH_FLAG) {
      mTXMgr->EndBatch(false);
    }
    return rv;
  }
};

class TestTransactionFactory
{
public:
  virtual TestTransaction *create(nsITransactionManager *txmgr, int32_t flags) = 0;
};

class SimpleTransactionFactory : public TestTransactionFactory
{
public:

  TestTransaction *create(nsITransactionManager *txmgr, int32_t flags)
  {
    return (TestTransaction *)new SimpleTransaction(flags);
  }
};

class AggregateTransactionFactory : public TestTransactionFactory
{
private:

  int32_t mMaxLevel;
  int32_t mNumChildrenPerNode;
  int32_t mFixedFlags;

public:

  AggregateTransactionFactory(int32_t aMaxLevel, int32_t aNumChildrenPerNode,
                              int32_t aFixedFlags=NONE_FLAG)
      : mMaxLevel(aMaxLevel), mNumChildrenPerNode(aNumChildrenPerNode),
        mFixedFlags(aFixedFlags)
  {
  }

  virtual TestTransaction *create(nsITransactionManager *txmgr, int32_t flags)
  {
    return (TestTransaction *)new AggregateTransaction(txmgr, mMaxLevel,
                                                       mNumChildrenPerNode,
                                                       flags | mFixedFlags);
  }
};

void
reset_globals()
{
  sConstructorCount   = 0;

  sDestructorCount    = 0;
  sDestructorOrderArr = 0;

  sDoCount            = 0;
  sDoOrderArr         = 0;

  sUndoCount          = 0;
  sUndoOrderArr       = 0;

  sRedoCount          = 0;
  sRedoOrderArr       = 0;
}

/**
 * Test behaviors in non-batch mode.
 **/
nsresult
quick_test(TestTransactionFactory *factory)
{
  /*******************************************************************
   *
   * Create a transaction manager implementation:
   *
   *******************************************************************/

  nsresult rv;
  nsCOMPtr<nsITransactionManager> mgr =
    do_CreateInstance(NS_TRANSACTIONMANAGER_CONTRACTID, &rv);
  if (NS_FAILED(rv) || !mgr) {
    fail("Failed to create Transaction Manager instance.\n");
    return NS_ERROR_OUT_OF_MEMORY;
  }

  passed("Create transaction manager instance");

  /*******************************************************************
   *
   * Call DoTransaction() with a null transaction:
   *
   *******************************************************************/

  rv = mgr->DoTransaction(0);
  if (rv != NS_ERROR_NULL_POINTER) {
    fail("DoTransaction() returned unexpected error. (%d)\n", rv);
    return rv;
  }

  passed("Call DoTransaction() with null transaction");

  /*******************************************************************
   *
   * Call UndoTransaction() with an empty undo stack:
   *
   *******************************************************************/

  rv = mgr->UndoTransaction();
  if (NS_FAILED(rv)) {
    fail("Undo on empty undo stack failed. (%d)\n", rv);
    return rv;
  }

  passed("Call UndoTransaction() with empty undo stack");

  /*******************************************************************
   *
   * Call RedoTransaction() with an empty redo stack:
   *
   *******************************************************************/

  rv = mgr->RedoTransaction();
  if (NS_FAILED(rv)) {
    fail("Redo on empty redo stack failed. (%d)\n", rv);
    return rv;
  }

  passed("Call RedoTransaction() with empty redo stack");

  /*******************************************************************
   *
   * Call SetMaxTransactionCount(-1) with empty undo and redo stacks:
   *
   *******************************************************************/

  rv = mgr->SetMaxTransactionCount(-1);
  if (NS_FAILED(rv)) {
    fail("SetMaxTransactionCount(-1) failed. (%d)\n", rv);
    return rv;
  }

  passed("Call SetMaxTransactionCount(-1) with empty undo and redo stacks");

  /*******************************************************************
   *
   * Call SetMaxTransactionCount(0) with empty undo and redo stacks:
   *
   *******************************************************************/

  rv = mgr->SetMaxTransactionCount(0);
  if (NS_FAILED(rv)) {
    fail("SetMaxTransactionCount(0) failed. (%d)\n", rv);
    return rv;
  }

  passed("Call SetMaxTransactionCount(0) with empty undo and redo stacks");

  /*******************************************************************
   *
   * Call SetMaxTransactionCount(10) with empty undo and redo stacks:
   *
   *******************************************************************/

  rv = mgr->SetMaxTransactionCount(10);
  if (NS_FAILED(rv)) {
    fail("SetMaxTransactionCount(10) failed. (%d)\n", rv);
    return rv;
  }

  passed("Call SetMaxTransactionCount(10) with empty undo and redo stacks");

  /*******************************************************************
   *
   * Call Clear() with empty undo and redo stacks:
   *
   *******************************************************************/

  rv = mgr->Clear();
  if (NS_FAILED(rv)) {
    fail("Clear on empty undo and redo stack failed. (%d)\n", rv);
    return rv;
  }

  passed("Call Clear() with empty undo and redo stack");

  int32_t numitems;

  /*******************************************************************
   *
   * Call GetNumberOfUndoItems() with an empty undo stack:
   *
   *******************************************************************/

  rv = mgr->GetNumberOfUndoItems(&numitems);
  if (NS_FAILED(rv)) {
    fail("GetNumberOfUndoItems() on empty undo stack failed. (%d)\n",
         rv);
    return rv;
  }

  if (numitems) {
    fail("GetNumberOfUndoItems() expected 0 got %d. (%d)\n",
         numitems, rv);
    return NS_ERROR_FAILURE;
  }

  passed("Call GetNumberOfUndoItems() with empty undo stack");

  /*******************************************************************
   *
   * Call GetNumberOfRedoItems() with an empty redo stack:
   *
   *******************************************************************/

  rv = mgr->GetNumberOfRedoItems(&numitems);
  if (NS_FAILED(rv)) {
    fail("GetNumberOfRedoItems() on empty redo stack failed. (%d)\n",
         rv);
    return rv;
  }

  if (numitems) {
    fail("GetNumberOfRedoItems() expected 0 got %d. (%d)\n",
         numitems, rv);
    return NS_ERROR_FAILURE;
  }

  passed("Call GetNumberOfRedoItems() with empty redo stack");

  nsITransaction *tx;

  /*******************************************************************
   *
   * Call PeekUndoStack() with an empty undo stack:
   *
   *******************************************************************/

  tx = 0;
  rv = mgr->PeekUndoStack(&tx);

  TEST_TXMGR_IF_RELEASE(tx); // Don't hold onto any references!

  if (NS_FAILED(rv)) {
    fail("PeekUndoStack() on empty undo stack failed. (%d)\n", rv);
    return rv;
  }

  if (tx) {
    fail("PeekUndoStack() on empty undo stack failed. (%d)\n", rv);
    return NS_ERROR_FAILURE;
  }

  passed("Call PeekUndoStack() with empty undo stack");

  /*******************************************************************
   *
   * Call PeekRedoStack() with an empty undo stack:
   *
   *******************************************************************/

  tx = 0;
  rv = mgr->PeekRedoStack(&tx);

  TEST_TXMGR_IF_RELEASE(tx); // Don't hold onto any references!

  if (NS_FAILED(rv)) {
    fail("PeekRedoStack() on empty redo stack failed. (%d)\n", rv);
    return rv;
  }

  if (tx) {
    fail("PeekRedoStack() on empty redo stack failed. (%d)\n", rv);
    return NS_ERROR_FAILURE;
  }

  passed("Call PeekRedoStack() with empty undo stack");

  /*******************************************************************
   *
   * Call AddListener() with a null listener pointer:
   *
   *******************************************************************/

  rv = mgr->AddListener(0);
  if (rv != NS_ERROR_NULL_POINTER) {
    fail("AddListener() returned unexpected error. (%d)\n", rv);
    return rv;
  }

  passed("Call AddListener() with null listener");

  /*******************************************************************
   *
   * Call RemoveListener() with a null listener pointer:
   *
   *******************************************************************/

  rv = mgr->RemoveListener(0);
  if (rv != NS_ERROR_NULL_POINTER) {
    fail("RemoveListener() returned unexpected error. (%d)\n", rv);
    return rv;
  }

  passed("Call RemoveListener() with null listener");

  int32_t i;
  TestTransaction *tximpl;
  nsITransaction *u1, *u2;
  nsITransaction *r1, *r2;

  /*******************************************************************
   *
   * Test coalescing by executing a transaction that can merge any
   * command into itself. Then execute 20 transaction. Afterwards,
   * we should still have the first transaction sitting on the undo
   * stack. Then clear the undo and redo stacks.
   *
   *******************************************************************/

  rv = mgr->SetMaxTransactionCount(10);
  if (NS_FAILED(rv)) {
    fail("SetMaxTransactionCount(10) failed. (%d)\n", rv);
    return rv;
  }


  tximpl = factory->create(mgr, MERGE_FLAG);

  if (!tximpl) {
    fail("Failed to allocate initial transaction.\n");
    return NS_ERROR_OUT_OF_MEMORY;
  }

  tx = 0;

  rv = tximpl->QueryInterface(NS_GET_IID(nsITransaction), (void **)&tx);
  if (NS_FAILED(rv)) {
    fail("QueryInterface() failed for initial transaction. (%d)\n",
         rv);
    return rv;
  }

  rv = mgr->DoTransaction(tx);
  if (NS_FAILED(rv)) {
    fail("Failed to execute initial transaction. (%d)\n", rv);
    return rv;
  }

  tx->Release();

  u1 = u2 = r1 = r2 = 0;

  rv = mgr->PeekUndoStack(&u1);

  TEST_TXMGR_IF_RELEASE(u1); // Don't hold onto any references!

  if (NS_FAILED(rv)) {
    fail("Initial PeekUndoStack() failed. (%d)\n", rv);
    return rv;
  }

  if (u1 != tx) {
    fail("Top of undo stack is different!. (%d)\n", rv);
    return NS_ERROR_FAILURE;
  }

  rv = mgr->PeekRedoStack(&r1);

  TEST_TXMGR_IF_RELEASE(r1); // Don't hold onto any references!

  if (NS_FAILED(rv)) {
    fail("Initial PeekRedoStack() failed. (%d)\n", rv);
    return rv;
  }

  for (i = 1; i <= 20; i++) {
    tximpl = factory->create(mgr, NONE_FLAG);

    if (!tximpl) {
      fail("Failed to allocate transaction %d.\n", i);
      return NS_ERROR_OUT_OF_MEMORY;
    }

    tx = 0;
    rv = tximpl->QueryInterface(NS_GET_IID(nsITransaction), (void **)&tx);
    if (NS_FAILED(rv)) {
      fail("QueryInterface() failed for transaction %d. (%d)\n",
           i, rv);
      return rv;
    }

    rv = mgr->DoTransaction(tx);
    if (NS_FAILED(rv)) {
      fail("Failed to execute transaction %d. (%d)\n", i, rv);
      return rv;
    }

    tx->Release();
  }

  rv = mgr->PeekUndoStack(&u2);

  TEST_TXMGR_IF_RELEASE(u2); // Don't hold onto any references!

  if (NS_FAILED(rv)) {
    fail("Second PeekUndoStack() failed. (%d)\n", rv);
    return rv;
  }

  if (u1 != u2) {
    fail("Top of undo stack changed. (%d)\n", rv);
    return NS_ERROR_FAILURE;
  }

  rv = mgr->PeekRedoStack(&r2);

  TEST_TXMGR_IF_RELEASE(r2); // Don't hold onto any references!

  if (NS_FAILED(rv)) {
    fail("Second PeekRedoStack() failed. (%d)\n", rv);
    return rv;
  }

  if (r1 != r2) {
    fail("Top of redo stack changed. (%d)\n", rv);
    return NS_ERROR_FAILURE;
  }

  rv = mgr->GetNumberOfUndoItems(&numitems);
  if (NS_FAILED(rv)) {
    fail("GetNumberOfUndoItems() on undo stack with 1 item failed. (%d)\n",
         rv);
    return rv;
  }

  if (numitems != 1) {
    fail("GetNumberOfUndoItems() expected 1 got %d. (%d)\n",
         numitems, rv);
    return NS_ERROR_FAILURE;
  }

  rv = mgr->GetNumberOfRedoItems(&numitems);
  if (NS_FAILED(rv)) {
    fail("GetNumberOfRedoItems() on empty redo stack failed. (%d)\n",
         rv);
    return rv;
  }

  if (numitems) {
    fail("GetNumberOfRedoItems() expected 0 got %d. (%d)\n",
         numitems, rv);
    return NS_ERROR_FAILURE;
  }

  rv = mgr->Clear();
  if (NS_FAILED(rv)) {
    fail("Clear() failed. (%d)\n", rv);
    return rv;
  }

  passed("Test coalescing of transactions");

  /*******************************************************************
   *
   * Execute 20 transactions. Afterwards, we should have 10
   * transactions on the undo stack:
   *
   *******************************************************************/

  for (i = 1; i <= 20; i++) {
    tximpl = factory->create(mgr, NONE_FLAG);

    if (!tximpl) {
      fail("Failed to allocate transaction %d.\n", i);
      return NS_ERROR_OUT_OF_MEMORY;
    }

    tx = 0;
    rv = tximpl->QueryInterface(NS_GET_IID(nsITransaction), (void **)&tx);
    if (NS_FAILED(rv)) {
      fail("QueryInterface() failed for transaction %d. (%d)\n",
           i, rv);
      return rv;
    }

    rv = mgr->DoTransaction(tx);
    if (NS_FAILED(rv)) {
      fail("Failed to execute transaction %d. (%d)\n", i, rv);
      return rv;
    }

    tx->Release();
  }

  rv = mgr->GetNumberOfUndoItems(&numitems);
  if (NS_FAILED(rv)) {
    fail("GetNumberOfUndoItems() on undo stack with 10 items failed. (%d)\n",
         rv);
    return rv;
  }

  if (numitems != 10) {
    fail("GetNumberOfUndoItems() expected 10 got %d. (%d)\n",
         numitems, rv);
    return NS_ERROR_FAILURE;
  }

  rv = mgr->GetNumberOfRedoItems(&numitems);

  if (NS_FAILED(rv)) {
    fail("GetNumberOfRedoItems() on empty redo stack failed. (%d)\n",
         rv);
    return rv;
  }

  if (numitems) {
    fail("GetNumberOfRedoItems() expected 0 got %d. (%d)\n",
         numitems, rv);
    return NS_ERROR_FAILURE;
  }

  passed("Execute 20 transactions");

  /*******************************************************************
   *
   * Execute 20 transient transactions. Afterwards, we should still
   * have the same 10 transactions on the undo stack:
   *
   *******************************************************************/

  u1 = u2 = r1 = r2 = 0;

  rv = mgr->PeekUndoStack(&u1);

  TEST_TXMGR_IF_RELEASE(u1); // Don't hold onto any references!

  if (NS_FAILED(rv)) {
    fail("Initial PeekUndoStack() failed. (%d)\n", rv);
    return rv;
  }

  rv = mgr->PeekRedoStack(&r1);

  TEST_TXMGR_IF_RELEASE(r1); // Don't hold onto any references!

  if (NS_FAILED(rv)) {
    fail("Initial PeekRedoStack() failed. (%d)\n", rv);
    return rv;
  }

  for (i = 1; i <= 20; i++) {
    tximpl = factory->create(mgr, TRANSIENT_FLAG);

    if (!tximpl) {
      fail("Failed to allocate transaction %d.\n", i);
      return NS_ERROR_OUT_OF_MEMORY;
    }

    tx = 0;
    rv = tximpl->QueryInterface(NS_GET_IID(nsITransaction), (void **)&tx);
    if (NS_FAILED(rv)) {
      fail("QueryInterface() failed for transaction %d. (%d)\n",
           i, rv);
      return rv;
    }

    rv = mgr->DoTransaction(tx);
    if (NS_FAILED(rv)) {
      fail("Failed to execute transaction %d. (%d)\n", i, rv);
      return rv;
    }

    tx->Release();
  }

  rv = mgr->PeekUndoStack(&u2);

  TEST_TXMGR_IF_RELEASE(u2); // Don't hold onto any references!

  if (NS_FAILED(rv)) {
    fail("Second PeekUndoStack() failed. (%d)\n", rv);
    return rv;
  }

  if (u1 != u2) {
    fail("Top of undo stack changed. (%d)\n", rv);
    return NS_ERROR_FAILURE;
  }

  rv = mgr->PeekRedoStack(&r2);

  TEST_TXMGR_IF_RELEASE(r2); // Don't hold onto any references!

  if (NS_FAILED(rv)) {
    fail("Second PeekRedoStack() failed. (%d)\n", rv);
    return rv;
  }

  if (r1 != r2) {
    fail("Top of redo stack changed. (%d)\n", rv);
    return NS_ERROR_FAILURE;
  }

  rv = mgr->GetNumberOfUndoItems(&numitems);
  if (NS_FAILED(rv)) {
    fail("GetNumberOfUndoItems() on undo stack with 10 items failed. (%d)\n",
         rv);
    return rv;
  }

  if (numitems != 10) {
    fail("GetNumberOfUndoItems() expected 10 got %d. (%d)\n",
         numitems, rv);
    return NS_ERROR_FAILURE;
  }

  rv = mgr->GetNumberOfRedoItems(&numitems);
  if (NS_FAILED(rv)) {
    fail("GetNumberOfRedoItems() on empty redo stack failed. (%d)\n",
         rv);
    return rv;
  }

  if (numitems) {
    fail("GetNumberOfRedoItems() expected 0 got %d. (%d)\n",
         numitems, rv);
    return NS_ERROR_FAILURE;
  }

  passed("Execute 20 transient transactions");

  /*******************************************************************
   *
   * Undo 4 transactions. Afterwards, we should have 6 transactions
   * on the undo stack, and 4 on the redo stack:
   *
   *******************************************************************/

  for (i = 1; i <= 4; i++) {
    rv = mgr->UndoTransaction();
    if (NS_FAILED(rv)) {
      fail("Failed to undo transaction %d. (%d)\n", i, rv);
      return rv;
    }
  }

  rv = mgr->GetNumberOfUndoItems(&numitems);
  if (NS_FAILED(rv)) {
    fail("GetNumberOfUndoItems() on undo stack with 6 items failed. (%d)\n",
         rv);
    return rv;
  }

  if (numitems != 6) {
    fail("GetNumberOfUndoItems() expected 6 got %d. (%d)\n",
         numitems, rv);
    return NS_ERROR_FAILURE;
  }

  rv = mgr->GetNumberOfRedoItems(&numitems);
  if (NS_FAILED(rv)) {
    fail("GetNumberOfRedoItems() on redo stack with 4 items failed. (%d)\n",
         rv);
    return rv;
  }

  if (numitems != 4) {
    fail("GetNumberOfRedoItems() expected 4 got %d. (%d)\n",
         numitems, rv);
    return NS_ERROR_FAILURE;
  }

  passed("Undo 4 transactions");

  /*******************************************************************
   *
   * Redo 2 transactions. Afterwards, we should have 8 transactions
   * on the undo stack, and 2 on the redo stack:
   *
   *******************************************************************/

  for (i = 1; i <= 2; ++i) {
    rv = mgr->RedoTransaction();
    if (NS_FAILED(rv)) {
      fail("Failed to redo transaction %d. (%d)\n", i, rv);
      return rv;
    }
  }

  rv = mgr->GetNumberOfUndoItems(&numitems);
  if (NS_FAILED(rv)) {
    fail("GetNumberOfUndoItems() on undo stack with 8 items failed. (%d)\n",
         rv);
    return rv;
  }

  if (numitems != 8) {
    fail("GetNumberOfUndoItems() expected 8 got %d. (%d)\n",
         numitems, rv);
    return NS_ERROR_FAILURE;
  }

  rv = mgr->GetNumberOfRedoItems(&numitems);
  if (NS_FAILED(rv)) {
    fail("GetNumberOfRedoItems() on redo stack with 2 items failed. (%d)\n",
         rv);
    return rv;
  }

  if (numitems != 2) {
    fail("GetNumberOfRedoItems() expected 2 got %d. (%d)\n",
         numitems, rv);
    return NS_ERROR_FAILURE;
  }

  passed("Redo 2 transactions");

  /*******************************************************************
   *
   * Execute a new transaction. The redo stack should get pruned!
   *
   *******************************************************************/

  tximpl = factory->create(mgr, NONE_FLAG);

  if (!tximpl) {
    fail("Failed to allocate transaction.\n");
    return NS_ERROR_OUT_OF_MEMORY;
  }

  tx = 0;

  rv = tximpl->QueryInterface(NS_GET_IID(nsITransaction), (void **)&tx);
  if (NS_FAILED(rv)) {
    fail("QueryInterface() failed for transaction. (%d)\n", rv);
    return rv;
  }

  rv = mgr->DoTransaction(tx);
  if (NS_FAILED(rv)) {
    fail("Failed to execute transaction. (%d)\n", rv);
    return rv;
  }

  tx->Release();

  rv = mgr->GetNumberOfUndoItems(&numitems);
  if (NS_FAILED(rv)) {
    fail("GetNumberOfUndoItems() on undo stack with 9 items failed. (%d)\n",
         rv);
    return rv;
  }

  if (numitems != 9) {
    fail("GetNumberOfUndoItems() expected 9 got %d. (%d)\n",
         numitems, rv);
    return NS_ERROR_FAILURE;
  }

  rv = mgr->GetNumberOfRedoItems(&numitems);
  if (NS_FAILED(rv)) {
    fail("GetNumberOfRedoItems() on empty redo stack failed. (%d)\n",
         rv);
    return rv;
  }

  if (numitems) {
    fail("GetNumberOfRedoItems() expected 0 got %d. (%d)\n",
         numitems, rv);
    return NS_ERROR_FAILURE;
  }

  passed("Check if new transactions prune the redo stack");

  /*******************************************************************
   *
   * Undo 4 transactions then clear the undo and redo stacks.
   *
   *******************************************************************/

  for (i = 1; i <= 4; ++i) {
    rv = mgr->UndoTransaction();
    if (NS_FAILED(rv)) {
      fail("Failed to undo transaction %d. (%d)\n", i, rv);
      return rv;
    }
  }

  rv = mgr->GetNumberOfUndoItems(&numitems);
  if (NS_FAILED(rv)) {
    fail("GetNumberOfUndoItems() on undo stack with 5 items failed. (%d)\n",
         rv);
    return rv;
  }

  if (numitems != 5) {
    fail("GetNumberOfUndoItems() expected 5 got %d. (%d)\n",
         numitems, rv);
    return NS_ERROR_FAILURE;
  }

  rv = mgr->GetNumberOfRedoItems(&numitems);
  if (NS_FAILED(rv)) {
    fail("GetNumberOfRedoItems() on redo stack with 4 items failed. (%d)\n",
         rv);
    return rv;
  }

  if (numitems != 4) {
    fail("GetNumberOfRedoItems() expected 4 got %d. (%d)\n",
         numitems, rv);
    return NS_ERROR_FAILURE;
  }

  rv = mgr->Clear();
  if (NS_FAILED(rv)) {
    fail("Clear() failed. (%d)\n", rv);
    return rv;
  }

  rv = mgr->GetNumberOfUndoItems(&numitems);
  if (NS_FAILED(rv)) {
    fail("GetNumberOfUndoItems() on cleared undo stack failed. (%d)\n",
         rv);
    return rv;
  }

  if (numitems) {
    fail("GetNumberOfUndoItems() expected 0 got %d. (%d)\n",
         numitems, rv);
    return NS_ERROR_FAILURE;
  }

  rv = mgr->GetNumberOfRedoItems(&numitems);
  if (NS_FAILED(rv)) {
    fail("GetNumberOfRedoItems() on cleared redo stack failed. (%d)\n",
         rv);
    return rv;
  }

  if (numitems) {
    fail("GetNumberOfRedoItems() expected 0 got %d. (%d)\n",
         numitems, rv);
    return NS_ERROR_FAILURE;
  }

  passed("Undo 4 transactions then clear the undo and redo stacks");

  /*******************************************************************
   *
   * Execute 5 transactions.
   *
   *******************************************************************/

  for (i = 1; i <= 5; i++) {
    tximpl = factory->create(mgr, NONE_FLAG);

    if (!tximpl) {
      fail("Failed to allocate transaction %d.\n", i);
      return NS_ERROR_OUT_OF_MEMORY;
    }

    tx = 0;
    rv = tximpl->QueryInterface(NS_GET_IID(nsITransaction), (void **)&tx);
    if (NS_FAILED(rv)) {
      fail("QueryInterface() failed for transaction %d. (%d)\n",
           i, rv);
      return rv;
    }

    rv = mgr->DoTransaction(tx);
    if (NS_FAILED(rv)) {
      fail("Failed to execute transaction %d. (%d)\n", i, rv);
      return rv;
    }

    tx->Release();
  }

  rv = mgr->GetNumberOfUndoItems(&numitems);
  if (NS_FAILED(rv)) {
    fail("GetNumberOfUndoItems() on undo stack with 5 items failed. (%d)\n",
         rv);
    return rv;
  }

  if (numitems != 5) {
    fail("GetNumberOfUndoItems() expected 5 got %d. (%d)\n",
         numitems, rv);
    return NS_ERROR_FAILURE;
  }

  rv = mgr->GetNumberOfRedoItems(&numitems);
  if (NS_FAILED(rv)) {
    fail("GetNumberOfRedoItems() on empty redo stack failed. (%d)\n",
         rv);
    return rv;
  }

  if (numitems) {
    fail("GetNumberOfRedoItems() expected 0 got %d. (%d)\n",
         numitems, rv);
    return NS_ERROR_FAILURE;
  }

  passed("Execute 5 transactions");

  /*******************************************************************
   *
   * Test transaction DoTransaction() error:
   *
   *******************************************************************/

  tximpl = factory->create(mgr, THROWS_DO_ERROR_FLAG);

  if (!tximpl) {
    fail("Failed to allocate transaction.\n");
    return NS_ERROR_OUT_OF_MEMORY;
  }

  tx = 0;

  rv = tximpl->QueryInterface(NS_GET_IID(nsITransaction), (void **)&tx);
  if (NS_FAILED(rv)) {
    fail("QueryInterface() failed for transaction. (%d)\n", rv);
    return rv;
  }

  u1 = u2 = r1 = r2 = 0;

  rv = mgr->PeekUndoStack(&u1);

  TEST_TXMGR_IF_RELEASE(u1); // Don't hold onto any references!

  if (NS_FAILED(rv)) {
    fail("Initial PeekUndoStack() failed. (%d)\n", rv);
    return rv;
  }

  rv = mgr->PeekRedoStack(&r1);

  TEST_TXMGR_IF_RELEASE(r1); // Don't hold onto any references!

  if (NS_FAILED(rv)) {
    fail("Initial PeekRedoStack() failed. (%d)\n", rv);
    return rv;
  }

  rv = mgr->DoTransaction(tx);
  if (rv != NS_ERROR_FAILURE) {
    fail("DoTransaction() returned unexpected error. (%d)\n", rv);
    return rv;
  }

  tx->Release();

  rv = mgr->PeekUndoStack(&u2);

  TEST_TXMGR_IF_RELEASE(u2); // Don't hold onto any references!

  if (NS_FAILED(rv)) {
    fail("Second PeekUndoStack() failed. (%d)\n", rv);
    return rv;
  }

  if (u1 != u2) {
    fail("Top of undo stack changed. (%d)\n", rv);
    return NS_ERROR_FAILURE;
  }

  rv = mgr->PeekRedoStack(&r2);

  TEST_TXMGR_IF_RELEASE(r2); // Don't hold onto any references!

  if (NS_FAILED(rv)) {
    fail("Second PeekRedoStack() failed. (%d)\n", rv);
    return rv;
  }

  if (r1 != r2) {
    fail("Top of redo stack changed. (%d)\n", rv);
    return NS_ERROR_FAILURE;
  }

  rv = mgr->GetNumberOfUndoItems(&numitems);

  if (NS_FAILED(rv)) {
    fail("GetNumberOfUndoItems() on undo stack with 5 items failed. (%d)\n",
         rv);
    return rv;
  }

  if (numitems != 5) {
    fail("GetNumberOfUndoItems() expected 5 got %d. (%d)\n",
         numitems, rv);
    return NS_ERROR_FAILURE;
  }

  rv = mgr->GetNumberOfRedoItems(&numitems);
  if (NS_FAILED(rv)) {
    fail("GetNumberOfRedoItems() on empty redo stack. (%d)\n",
         rv);
    return rv;
  }

  if (numitems) {
    fail("GetNumberOfRedoItems() expected 0 got %d. (%d)\n",
         numitems, rv);
    return NS_ERROR_FAILURE;
  }

  passed("Test transaction DoTransaction() error");

  /*******************************************************************
   *
   * Test transaction UndoTransaction() error:
   *
   *******************************************************************/

  tximpl = factory->create(mgr, THROWS_UNDO_ERROR_FLAG);

  if (!tximpl) {
    fail("Failed to allocate transaction.\n");
    return NS_ERROR_OUT_OF_MEMORY;
  }

  tx = 0;

  rv = tximpl->QueryInterface(NS_GET_IID(nsITransaction), (void **)&tx);
  if (NS_FAILED(rv)) {
    fail("QueryInterface() failed for transaction. (%d)\n", rv);
    return rv;
  }

  rv = mgr->DoTransaction(tx);
  if (NS_FAILED(rv)) {
    fail("DoTransaction() returned unexpected error. (%d)\n", rv);
    return rv;
  }

  tx->Release();

  u1 = u2 = r1 = r2 = 0;

  rv = mgr->PeekUndoStack(&u1);

  TEST_TXMGR_IF_RELEASE(u1); // Don't hold onto any references!

  if (NS_FAILED(rv)) {
    fail("Initial PeekUndoStack() failed. (%d)\n", rv);
    return rv;
  }

  rv = mgr->PeekRedoStack(&r1);

  TEST_TXMGR_IF_RELEASE(r1); // Don't hold onto any references!

  if (NS_FAILED(rv)) {
    fail("Initial PeekRedoStack() failed. (%d)\n", rv);
    return rv;
  }

  rv = mgr->UndoTransaction();
  if (rv != NS_ERROR_FAILURE) {
    fail("UndoTransaction() returned unexpected error. (%d)\n", rv);
    return rv;
  }

  rv = mgr->PeekUndoStack(&u2);

  TEST_TXMGR_IF_RELEASE(u2); // Don't hold onto any references!

  if (NS_FAILED(rv)) {
    fail("Second PeekUndoStack() failed. (%d)\n", rv);
    return rv;
  }

  if (u1 != u2) {
    fail("Top of undo stack changed. (%d)\n", rv);
    return NS_ERROR_FAILURE;
  }

  rv = mgr->PeekRedoStack(&r2);

  TEST_TXMGR_IF_RELEASE(r2); // Don't hold onto any references!

  if (NS_FAILED(rv)) {
    fail("Second PeekRedoStack() failed. (%d)\n", rv);
    return rv;
  }

  if (r1 != r2) {
    fail("Top of redo stack changed. (%d)\n", rv);
    return NS_ERROR_FAILURE;
  }

  rv = mgr->GetNumberOfUndoItems(&numitems);
  if (NS_FAILED(rv)) {
    fail("GetNumberOfUndoItems() on undo stack with 6 items failed. (%d)\n",
         rv);
    return rv;
  }

  if (numitems != 6) {
    fail("GetNumberOfUndoItems() expected 6 got %d. (%d)\n",
         numitems, rv);
    return NS_ERROR_FAILURE;
  }

  rv = mgr->GetNumberOfRedoItems(&numitems);
  if (NS_FAILED(rv)) {
    fail("GetNumberOfRedoItems() on empty redo stack. (%d)\n",
         rv);
    return rv;
  }

  if (numitems) {
    fail("GetNumberOfRedoItems() expected 0 got %d. (%d)\n",
         numitems, rv);
    return NS_ERROR_FAILURE;
  }

  passed("Test transaction UndoTransaction() error");

  /*******************************************************************
   *
   * Test transaction RedoTransaction() error:
   *
   *******************************************************************/

  tximpl = factory->create(mgr, THROWS_REDO_ERROR_FLAG);

  if (!tximpl) {
    fail("Failed to allocate transaction.\n");
    return NS_ERROR_OUT_OF_MEMORY;
  }

  tx = 0;

  rv = tximpl->QueryInterface(NS_GET_IID(nsITransaction), (void **)&tx);
  if (NS_FAILED(rv)) {
    fail("QueryInterface() failed for RedoErrorTransaction. (%d)\n",
         rv);
    return rv;
  }

  rv = mgr->DoTransaction(tx);

  if (NS_FAILED(rv)) {
    fail("DoTransaction() returned unexpected error. (%d)\n", rv);
    return rv;
  }

  tx->Release();

  //
  // Execute a normal transaction to be used in a later test:
  //

  tximpl = factory->create(mgr, NONE_FLAG);

  if (!tximpl) {
    fail("Failed to allocate transaction.\n");
    return NS_ERROR_OUT_OF_MEMORY;
  }

  tx = 0;

  rv = tximpl->QueryInterface(NS_GET_IID(nsITransaction), (void **)&tx);
  if (NS_FAILED(rv)) {
    fail("QueryInterface() failed for transaction. (%d)\n", rv);
    return rv;
  }

  rv = mgr->DoTransaction(tx);
  if (NS_FAILED(rv)) {
    fail("DoTransaction() returned unexpected error. (%d)\n", rv);
    return rv;
  }

  tx->Release();

  //
  // Undo the 2 transactions just executed.
  //

  for (i = 1; i <= 2; ++i) {
    rv = mgr->UndoTransaction();
    if (NS_FAILED(rv)) {
      fail("Failed to undo transaction %d. (%d)\n", i, rv);
      return rv;
    }
  }

  //
  // The RedoErrorTransaction should now be at the top of the redo stack!
  //

  u1 = u2 = r1 = r2 = 0;

  rv = mgr->PeekUndoStack(&u1);

  TEST_TXMGR_IF_RELEASE(u1); // Don't hold onto any references!

  if (NS_FAILED(rv)) {
    fail("Initial PeekUndoStack() failed. (%d)\n", rv);
    return rv;
  }

  rv = mgr->PeekRedoStack(&r1);

  TEST_TXMGR_IF_RELEASE(r1); // Don't hold onto any references!

  if (NS_FAILED(rv)) {
    fail("Initial PeekRedoStack() failed. (%d)\n", rv);
    return rv;
  }

  rv = mgr->RedoTransaction();
  if (rv != NS_ERROR_FAILURE) {
    fail("RedoTransaction() returned unexpected error. (%d)\n", rv);
    return rv;
  }

  rv = mgr->PeekUndoStack(&u2);

  TEST_TXMGR_IF_RELEASE(u2); // Don't hold onto any references!

  if (NS_FAILED(rv)) {
    fail("Second PeekUndoStack() failed. (%d)\n", rv);
    return rv;
  }

  if (u1 != u2) {
    fail("Top of undo stack changed. (%d)\n", rv);
    return NS_ERROR_FAILURE;
  }

  rv = mgr->PeekRedoStack(&r2);

  TEST_TXMGR_IF_RELEASE(r2); // Don't hold onto any references!

  if (NS_FAILED(rv)) {
    fail("Second PeekRedoStack() failed. (%d)\n", rv);
    return rv;
  }

  if (r1 != r2) {
    fail("Top of redo stack changed. (%d)\n", rv);
    return NS_ERROR_FAILURE;
  }

  rv = mgr->GetNumberOfUndoItems(&numitems);
  if (NS_FAILED(rv)) {
    fail("GetNumberOfUndoItems() on undo stack with 6 items failed. (%d)\n",
         rv);
    return rv;
  }

  if (numitems != 6) {
    fail("GetNumberOfUndoItems() expected 6 got %d. (%d)\n",
         numitems, rv);
    return NS_ERROR_FAILURE;
  }

  rv = mgr->GetNumberOfRedoItems(&numitems);
  if (NS_FAILED(rv)) {
    fail("GetNumberOfRedoItems() on redo stack with 2 items failed. (%d)\n",
         rv);
    return rv;
  }

  if (numitems != 2) {
    fail("GetNumberOfRedoItems() expected 2 got %d. (%d)\n",
         numitems, rv);
    return NS_ERROR_FAILURE;
  }

  passed("Test transaction RedoTransaction() error");

  /*******************************************************************
   *
   * Make sure that setting the transaction manager's max transaction
   * count to zero, clears both the undo and redo stacks, and executes
   * all new commands without pushing them on the undo stack!
   *
   *******************************************************************/

  rv = mgr->SetMaxTransactionCount(0);
  if (NS_FAILED(rv)) {
    fail("SetMaxTransactionCount(0) failed. (%d)\n", rv);
    return rv;
  }

  rv = mgr->GetNumberOfUndoItems(&numitems);
  if (NS_FAILED(rv)) {
    fail("GetNumberOfUndoItems() on empty undo stack failed. (%d)\n",
         rv);
    return rv;
  }

  if (numitems) {
    fail("GetNumberOfUndoItems() expected 0 got %d. (%d)\n",
         numitems, rv);
    return NS_ERROR_FAILURE;
  }

  rv = mgr->GetNumberOfRedoItems(&numitems);
  if (NS_FAILED(rv)) {
    fail("GetNumberOfRedoItems() on empty redo stack failed. (%d)\n",
         rv);
    return rv;
  }

  if (numitems) {
    fail("GetNumberOfRedoItems() expected 0 got %d. (%d)\n",
         numitems, rv);
    return NS_ERROR_FAILURE;
  }

  for (i = 1; i <= 20; i++) {
    tximpl = factory->create(mgr, NONE_FLAG);

    if (!tximpl) {
      fail("Failed to allocate transaction %d.\n", i);
      return NS_ERROR_OUT_OF_MEMORY;
    }

    tx = 0;
    rv = tximpl->QueryInterface(NS_GET_IID(nsITransaction), (void **)&tx);
    if (NS_FAILED(rv)) {
      fail("QueryInterface() failed for transaction %d. (%d)\n",
           i, rv);
      return rv;
    }

    rv = mgr->DoTransaction(tx);
    if (NS_FAILED(rv)) {
      fail("Failed to execute transaction %d. (%d)\n", i, rv);
      return rv;
    }

    tx->Release();

    rv = mgr->GetNumberOfUndoItems(&numitems);
    if (NS_FAILED(rv)) {
      fail("GetNumberOfUndoItems() on empty undo stack failed. (%d)\n",
           rv);
      return rv;
    }

    if (numitems) {
      fail("GetNumberOfUndoItems() expected 0 got %d. (%d)\n",
           numitems, rv);
      return NS_ERROR_FAILURE;
    }

    rv = mgr->GetNumberOfRedoItems(&numitems);
    if (NS_FAILED(rv)) {
      fail("GetNumberOfRedoItems() on empty redo stack failed. (%d)\n",
           rv);
      return rv;
    }

    if (numitems) {
      fail("GetNumberOfRedoItems() expected 0 got %d. (%d)\n",
           numitems, rv);
      return NS_ERROR_FAILURE;
    }
  }

  passed("Test max transaction count of zero");

  /*******************************************************************
   *
   * Make sure that setting the transaction manager's max transaction
   * count to something greater than the number of transactions on
   * both the undo and redo stacks causes no pruning of the stacks:
   *
   *******************************************************************/

  rv = mgr->SetMaxTransactionCount(-1);
  if (NS_FAILED(rv)) {
    fail("SetMaxTransactionCount(-1) failed. (%d)\n", rv);
    return rv;
  }

  // Push 20 transactions on the undo stack:

  for (i = 1; i <= 20; i++) {
    tximpl = factory->create(mgr, NONE_FLAG);

    if (!tximpl) {
      fail("Failed to allocate transaction %d.\n", i);
      return NS_ERROR_OUT_OF_MEMORY;
    }

    tx = 0;
    rv = tximpl->QueryInterface(NS_GET_IID(nsITransaction), (void **)&tx);
    if (NS_FAILED(rv)) {
      fail("QueryInterface() failed for transaction %d. (%d)\n",
           i, rv);
      return rv;
    }

    rv = mgr->DoTransaction(tx);
    if (NS_FAILED(rv)) {
      fail("Failed to execute transaction %d. (%d)\n", i, rv);
      return rv;
    }

    tx->Release();

    rv = mgr->GetNumberOfUndoItems(&numitems);
    if (NS_FAILED(rv)) {
      fail("GetNumberOfUndoItems() on undo stack with %d items failed. (%d)\n",
           i, rv);
      return rv;
    }

    if (numitems != i) {
      fail("GetNumberOfUndoItems() expected %d got %d. (%d)\n",
           i, numitems, rv);
      return NS_ERROR_FAILURE;
    }

    rv = mgr->GetNumberOfRedoItems(&numitems);
    if (NS_FAILED(rv)) {
      fail("GetNumberOfRedoItems() on empty redo stack failed. (%d)\n",
           rv);
      return rv;
    }

    if (numitems) {
      fail("GetNumberOfRedoItems() expected 0 got %d. (%d)\n",
           numitems, rv);
      return NS_ERROR_FAILURE;
    }
  }

  for (i = 1; i <= 10; i++) {
    rv = mgr->UndoTransaction();
    if (NS_FAILED(rv)) {
      fail("Failed to undo transaction %d. (%d)\n", i, rv);
      return rv;
    }
  }
  rv = mgr->GetNumberOfUndoItems(&numitems);
  if (NS_FAILED(rv)) {
    fail("GetNumberOfUndoItems() on empty undo stack with 10 items failed. (%d)\n",
         rv);
    return rv;
  }

  if (numitems != 10) {
    fail("GetNumberOfUndoItems() expected 10 got %d. (%d)\n",
         numitems, rv);
    return NS_ERROR_FAILURE;
  }

  rv = mgr->GetNumberOfRedoItems(&numitems);
  if (NS_FAILED(rv)) {
    fail("GetNumberOfRedoItems() on redo stack with 10 items failed. (%d)\n",
         rv);
    return rv;
  }

  if (numitems != 10) {
    fail("GetNumberOfRedoItems() expected 10 got %d. (%d)\n",
         numitems, rv);
    return NS_ERROR_FAILURE;
  }

  u1 = u2 = r1 = r2 = 0;

  rv = mgr->PeekUndoStack(&u1);

  TEST_TXMGR_IF_RELEASE(u1); // Don't hold onto any references!

  if (NS_FAILED(rv)) {
    fail("Initial PeekUndoStack() failed. (%d)\n", rv);
    return rv;
  }

  rv = mgr->PeekRedoStack(&r1);

  TEST_TXMGR_IF_RELEASE(r1); // Don't hold onto any references!

  if (NS_FAILED(rv)) {
    fail("Initial PeekRedoStack() failed. (%d)\n", rv);
    return rv;
  }

  rv = mgr->SetMaxTransactionCount(25);
  if (NS_FAILED(rv)) {
    fail("SetMaxTransactionCount(25) failed. (%d)\n", rv);
    return rv;
  }

  rv = mgr->PeekUndoStack(&u2);

  TEST_TXMGR_IF_RELEASE(u2); // Don't hold onto any references!

  if (NS_FAILED(rv)) {
    fail("Second PeekUndoStack() failed. (%d)\n", rv);
    return rv;
  }

  if (u1 != u2) {
    fail("Top of undo stack changed. (%d)\n", rv);
    return NS_ERROR_FAILURE;
  }

  rv = mgr->PeekRedoStack(&r2);

  TEST_TXMGR_IF_RELEASE(r2); // Don't hold onto any references!

  if (NS_FAILED(rv)) {
    fail("Second PeekRedoStack() failed. (%d)\n", rv);
    return rv;
  }

  if (r1 != r2) {
    fail("Top of redo stack changed. (%d)\n", rv);
    return NS_ERROR_FAILURE;
  }

  rv = mgr->GetNumberOfUndoItems(&numitems);
  if (NS_FAILED(rv)) {
    fail("GetNumberOfUndoItems() on undo stack with 10 items failed. (%d)\n",
         rv);
    return rv;
  }

  if (numitems != 10) {
    fail("GetNumberOfUndoItems() expected 10 got %d. (%d)\n",
         numitems, rv);
    return NS_ERROR_FAILURE;
  }

  rv = mgr->GetNumberOfRedoItems(&numitems);
  if (NS_FAILED(rv)) {
    fail("GetNumberOfRedoItems() on redo stack with 10 items failed. (%d)\n",
         rv);
    return rv;
  }

  if (numitems != 10) {
    fail("GetNumberOfRedoItems() expected 10 got %d. (%d)\n",
         numitems, rv);
    return NS_ERROR_FAILURE;
  }

  passed("Test SetMaxTransactionCount() greater than num stack items");

  /*******************************************************************
   *
   * Test undo stack pruning by setting the transaction
   * manager's max transaction count to a number lower than the
   * number of transactions on both the undo and redo stacks:
   *
   *******************************************************************/

  u1 = u2 = r1 = r2 = 0;

  rv = mgr->PeekUndoStack(&u1);

  TEST_TXMGR_IF_RELEASE(u1); // Don't hold onto any references!

  if (NS_FAILED(rv)) {
    fail("Initial PeekUndoStack() failed. (%d)\n", rv);
    return rv;
  }

  rv = mgr->PeekRedoStack(&r1);

  TEST_TXMGR_IF_RELEASE(r1); // Don't hold onto any references!

  if (NS_FAILED(rv)) {
    fail("Initial PeekRedoStack() failed. (%d)\n", rv);
    return rv;
  }

  rv = mgr->SetMaxTransactionCount(15);
  if (NS_FAILED(rv)) {
    fail("SetMaxTransactionCount(15) failed. (%d)\n", rv);
    return rv;
  }

  rv = mgr->PeekUndoStack(&u2);

  TEST_TXMGR_IF_RELEASE(u2); // Don't hold onto any references!

  if (NS_FAILED(rv)) {
    fail("Second PeekUndoStack() failed. (%d)\n", rv);
    return rv;
  }

  if (u1 != u2) {
    fail("Top of undo stack changed. (%d)\n", rv);
    return NS_ERROR_FAILURE;
  }

  rv = mgr->PeekRedoStack(&r2);

  TEST_TXMGR_IF_RELEASE(r2); // Don't hold onto any references!

  if (NS_FAILED(rv)) {
    fail("Second PeekRedoStack() failed. (%d)\n", rv);
    return rv;
  }

  if (r1 != r2) {
    fail("Top of redo stack changed. (%d)\n", rv);
    return NS_ERROR_FAILURE;
  }

  rv = mgr->GetNumberOfUndoItems(&numitems);
  if (NS_FAILED(rv)) {
    fail("GetNumberOfUndoItems() on undo stack with 5 items failed. (%d)\n",
           rv);
    return rv;
  }

  if (numitems != 5) {
    fail("GetNumberOfUndoItems() expected 5 got %d. (%d)\n",
         numitems, rv);
    return NS_ERROR_FAILURE;
  }

  rv = mgr->GetNumberOfRedoItems(&numitems);
  if (NS_FAILED(rv)) {
    fail("GetNumberOfRedoItems() on redo stack with 10 items failed. (%d)\n",
         rv);
    return rv;
  }

  if (numitems != 10) {
    fail("GetNumberOfRedoItems() expected 10 got %d. (%d)\n",
         numitems, rv);
    return NS_ERROR_FAILURE;
  }

  passed("Test SetMaxTransactionCount() pruning undo stack");

  /*******************************************************************
   *
   * Test redo stack pruning by setting the transaction
   * manager's max transaction count to a number lower than the
   * number of transactions on both the undo and redo stacks:
   *
   *******************************************************************/

  u1 = u2 = r1 = r2 = 0;

  rv = mgr->PeekUndoStack(&u1);

  TEST_TXMGR_IF_RELEASE(u1); // Don't hold onto any references!

  if (NS_FAILED(rv)) {
    fail("Initial PeekUndoStack() failed. (%d)\n", rv);
    return rv;
  }

  rv = mgr->PeekRedoStack(&r1);

  TEST_TXMGR_IF_RELEASE(r1); // Don't hold onto any references!

  if (NS_FAILED(rv)) {
    fail("Initial PeekRedoStack() failed. (%d)\n", rv);
    return rv;
  }

  rv = mgr->SetMaxTransactionCount(5);
  if (NS_FAILED(rv)) {
    fail("SetMaxTransactionCount(5) failed. (%d)\n", rv);
    return rv;
  }

  rv = mgr->PeekUndoStack(&u2);

  TEST_TXMGR_IF_RELEASE(u2); // Don't hold onto any references!

  if (NS_FAILED(rv)) {
    fail("Second PeekUndoStack() failed. (%d)\n", rv);
    return rv;
  }

  if (u2) {
    fail("Unexpected item at top of undo stack. (%d)\n", rv);
    return NS_ERROR_FAILURE;
  }

  rv = mgr->PeekRedoStack(&r2);

  TEST_TXMGR_IF_RELEASE(r2); // Don't hold onto any references!

  if (NS_FAILED(rv)) {
    fail("Second PeekRedoStack() failed. (%d)\n", rv);
    return rv;
  }

  if (r1 != r2) {
    fail("Top of redo stack changed. (%d)\n", rv);
    return NS_ERROR_FAILURE;
  }

  rv = mgr->GetNumberOfUndoItems(&numitems);
  if (NS_FAILED(rv)) {
    fail("GetNumberOfUndoItems() on empty undo stack failed. (%d)\n",
         rv);
    return rv;
  }

  if (numitems != 0) {
    fail("GetNumberOfUndoItems() expected 0 got %d. (%d)\n",
         numitems, rv);
    return NS_ERROR_FAILURE;
  }

  rv = mgr->GetNumberOfRedoItems(&numitems);
  if (NS_FAILED(rv)) {
    fail("GetNumberOfRedoItems() on redo stack with 5 items failed. (%d)\n",
         rv);
    return rv;
  }

  if (numitems != 5) {
    fail("GetNumberOfRedoItems() expected 5 got %d. (%d)\n",
         numitems, rv);
    return NS_ERROR_FAILURE;
  }

  passed("Test SetMaxTransactionCount() pruning redo stack");

  /*******************************************************************
   *
   * Release the transaction manager. Any transactions on the undo
   * and redo stack should automatically be released:
   *
   *******************************************************************/

  rv = mgr->SetMaxTransactionCount(-1);
  if (NS_FAILED(rv)) {
    fail("SetMaxTransactionCount(-1) failed. (%d)\n", rv);
    return rv;
  }

  // Push 20 transactions on the undo stack:

  for (i = 1; i <= 20; i++) {
    tximpl = factory->create(mgr, NONE_FLAG);

    if (!tximpl) {
      fail("Failed to allocate transaction %d.\n", i);
      return NS_ERROR_OUT_OF_MEMORY;
    }

    tx = 0;
    rv = tximpl->QueryInterface(NS_GET_IID(nsITransaction), (void **)&tx);
    if (NS_FAILED(rv)) {
      fail("QueryInterface() failed for transaction %d. (%d)\n",
           i, rv);
      return rv;
    }

    rv = mgr->DoTransaction(tx);
    if (NS_FAILED(rv)) {
      fail("Failed to execute transaction %d. (%d)\n", i, rv);
      return rv;
    }

    tx->Release();

    rv = mgr->GetNumberOfUndoItems(&numitems);
    if (NS_FAILED(rv)) {
      fail("GetNumberOfUndoItems() on undo stack with %d items failed. (%d)\n",
           i, rv);
      return rv;
    }

    if (numitems != i) {
      fail("GetNumberOfUndoItems() expected %d got %d. (%d)\n",
           i, numitems, rv);
      return NS_ERROR_FAILURE;
    }

    rv = mgr->GetNumberOfRedoItems(&numitems);
    if (NS_FAILED(rv)) {
      fail("GetNumberOfRedoItems() on empty redo stack failed. (%d)\n",
           rv);
      return rv;
    }

    if (numitems) {
      fail("GetNumberOfRedoItems() expected 0 got %d. (%d)\n",
           numitems, rv);
      return NS_ERROR_FAILURE;
    }
  }

  for (i = 1; i <= 10; i++) {
    rv = mgr->UndoTransaction();
    if (NS_FAILED(rv)) {
      fail("Failed to undo transaction %d. (%d)\n", i, rv);
      return rv;
    }
  }

  rv = mgr->GetNumberOfUndoItems(&numitems);
  if (NS_FAILED(rv)) {
    fail("GetNumberOfUndoItems() on undo stack with 10 items failed. (%d)\n",
         rv);
    return rv;
  }

  if (numitems != 10) {
    fail("GetNumberOfUndoItems() expected 10 got %d. (%d)\n",
         numitems, rv);
    return NS_ERROR_FAILURE;
  }

  rv = mgr->GetNumberOfRedoItems(&numitems);
  if (NS_FAILED(rv)) {
    fail("GetNumberOfRedoItems() on redo stack with 10 items failed. (%d)\n",
         rv);
    return rv;
  }

  if (numitems != 10) {
    fail("GetNumberOfRedoItems() expected 10 got %d. (%d)\n",
         numitems, rv);
    return NS_ERROR_FAILURE;
  }

  rv = mgr->Clear();
  if (NS_FAILED(rv)) {
    fail("Clear() failed. (%d)\n", rv);
    return rv;
  }

  passed("Release the transaction manager");

  /*******************************************************************
   *
   * Make sure number of transactions created matches number of
   * transactions destroyed!
   *
   *******************************************************************/

  /* Disabled because the current cycle collector doesn't delete
     cycle collectable objects synchronously.
  if (sConstructorCount != sDestructorCount) {
    fail("Transaction constructor count (%d) != destructor count (%d).\n",
         sConstructorCount, sDestructorCount);
    return NS_ERROR_FAILURE;
  }*/

  passed("Number of transactions created and destroyed match");
  passed("%d transactions processed during quick test", sConstructorCount);

  return NS_OK;
}

nsresult
simple_test()
{
  /*******************************************************************
   *
   * Initialize globals for test.
   *
   *******************************************************************/
  reset_globals();
  sDestructorOrderArr = sSimpleTestDestructorOrderArr;
  sDoOrderArr         = sSimpleTestDoOrderArr;
  sUndoOrderArr       = sSimpleTestUndoOrderArr;
  sRedoOrderArr       = sSimpleTestRedoOrderArr;

  /*******************************************************************
   *
   * Run the quick test.
   *
   *******************************************************************/

  printf("\n-----------------------------------------------------\n");
  printf("- Begin Simple Transaction Test:\n");
  printf("-----------------------------------------------------\n");

  SimpleTransactionFactory factory;

  return quick_test(&factory);
}

nsresult
aggregation_test()
{
  /*******************************************************************
   *
   * Initialize globals for test.
   *
   *******************************************************************/

  reset_globals();
  sDestructorOrderArr = sAggregateTestDestructorOrderArr;
  sDoOrderArr         = sAggregateTestDoOrderArr;
  sUndoOrderArr       = sAggregateTestUndoOrderArr;
  sRedoOrderArr       = sAggregateTestRedoOrderArr;

  /*******************************************************************
   *
   * Run the quick test.
   *
   *******************************************************************/

  printf("\n-----------------------------------------------------\n");
  printf("- Begin Aggregate Transaction Test:\n");
  printf("-----------------------------------------------------\n");

  AggregateTransactionFactory factory(3, 2);

  return quick_test(&factory);
}

/**
 * Test behaviors in batch mode.
 **/
nsresult
quick_batch_test(TestTransactionFactory *factory)
{
  /*******************************************************************
   *
   * Create a transaction manager implementation:
   *
   *******************************************************************/

  nsresult rv;
  nsCOMPtr<nsITransactionManager> mgr =
    do_CreateInstance(NS_TRANSACTIONMANAGER_CONTRACTID, &rv);
  if (NS_FAILED(rv) || !mgr) {
    fail("Failed to create Transaction Manager instance.\n");
    return NS_ERROR_OUT_OF_MEMORY;
  }

  passed("Create transaction manager instance");

  int32_t numitems;

  /*******************************************************************
   *
   * Make sure an unbalanced call to EndBatch(false) with empty undo stack
   * throws an error!
   *
   *******************************************************************/

  rv = mgr->GetNumberOfUndoItems(&numitems);
  if (NS_FAILED(rv)) {
    fail("GetNumberOfUndoItems() on empty undo stack failed. (%d)\n",
         rv);
    return rv;
  }

  if (numitems) {
    fail("GetNumberOfUndoItems() expected 0 got %d. (%d)\n",
         numitems, rv);
    return NS_ERROR_FAILURE;
  }

  rv = mgr->EndBatch(false);
  if (rv != NS_ERROR_FAILURE) {
    fail("EndBatch(false) returned unexpected status. (%d)\n", rv);
    return rv;
  }

  rv = mgr->GetNumberOfUndoItems(&numitems);
  if (NS_FAILED(rv)) {
    fail("GetNumberOfUndoItems() on empty undo stack failed. (%d)\n",
         rv);
    return rv;
  }

  if (numitems) {
    fail("GetNumberOfUndoItems() expected 0 got %d. (%d)\n",
         numitems, rv);
    return NS_ERROR_FAILURE;
  }

  passed("Test unbalanced EndBatch(false) with empty undo stack");

  /*******************************************************************
   *
   * Make sure that an empty batch is not added to the undo stack
   * when it is closed.
   *
   *******************************************************************/

  rv = mgr->GetNumberOfUndoItems(&numitems);
  if (NS_FAILED(rv)) {
    fail("GetNumberOfUndoItems() on empty undo stack failed. (%d)\n",
         rv);
    return rv;
  }

  if (numitems) {
    fail("GetNumberOfUndoItems() expected 0 got %d. (%d)\n",
         numitems, rv);
    return NS_ERROR_FAILURE;
  }

  rv = mgr->BeginBatch(nullptr);
  if (NS_FAILED(rv)) {
    fail("BeginBatch(nullptr) failed. (%d)\n", rv);
    return rv;
  }

  rv = mgr->GetNumberOfUndoItems(&numitems);
  if (NS_FAILED(rv)) {
    fail("GetNumberOfUndoItems() on empty undo stack failed. (%d)\n",
         rv);
    return rv;
  }

  if (numitems) {
    fail("GetNumberOfUndoItems() expected 0 got %d. (%d)\n",
         numitems, rv);
    return NS_ERROR_FAILURE;
  }

  rv = mgr->EndBatch(false);
  if (NS_FAILED(rv)) {
    fail("EndBatch(false) failed. (%d)\n", rv);
    return rv;
  }

  rv = mgr->GetNumberOfUndoItems(&numitems);
  if (NS_FAILED(rv)) {
    fail("GetNumberOfUndoItems() on empty undo stack failed. (%d)\n",
         rv);
    return rv;
  }

  if (numitems) {
    fail("GetNumberOfUndoItems() expected 0 got %d. (%d)\n",
         numitems, rv);
    return NS_ERROR_FAILURE;
  }

  passed("Test empty batch");

  int32_t i;
  TestTransaction *tximpl;
  nsITransaction *tx;

  /*******************************************************************
   *
   * Execute 20 transactions. Afterwards, we should have 1
   * transaction on the undo stack:
   *
   *******************************************************************/

  rv = mgr->BeginBatch(nullptr);
  if (NS_FAILED(rv)) {
    fail("BeginBatch(nullptr) failed. (%d)\n", rv);
    return rv;
  }

  for (i = 1; i <= 20; i++) {
    tximpl = factory->create(mgr, NONE_FLAG);

    if (!tximpl) {
      fail("Failed to allocate transaction %d.\n", i);
      return NS_ERROR_OUT_OF_MEMORY;
    }

    tx = 0;
    rv = tximpl->QueryInterface(NS_GET_IID(nsITransaction), (void **)&tx);
    if (NS_FAILED(rv)) {
      fail("QueryInterface() failed for transaction %d. (%d)\n",
           i, rv);
      return rv;
    }

    rv = mgr->DoTransaction(tx);
    if (NS_FAILED(rv)) {
      fail("Failed to execute transaction %d. (%d)\n", i, rv);
      return rv;
    }

    tx->Release();
  }

  rv = mgr->GetNumberOfUndoItems(&numitems);
  if (NS_FAILED(rv)) {
    fail("GetNumberOfUndoItems() on empty undo stack failed. (%d)\n",
         rv);
    return rv;
  }

  if (numitems != 0) {
    fail("GetNumberOfUndoItems() expected 0 got %d. (%d)\n",
         numitems, rv);
    return NS_ERROR_FAILURE;
  }

  rv = mgr->EndBatch(false);
  if (NS_FAILED(rv)) {
    fail("EndBatch(false) failed. (%d)\n", rv);
    return rv;
  }

  rv = mgr->GetNumberOfUndoItems(&numitems);
  if (NS_FAILED(rv)) {
    fail("GetNumberOfUndoItems() on undo stack with 1 item failed. (%d)\n",
         rv);
    return rv;
  }

  if (numitems != 1) {
    fail("GetNumberOfUndoItems() expected 1 got %d. (%d)\n",
         numitems, rv);
    return NS_ERROR_FAILURE;
  }

  passed("Execute 20 batched transactions");

  nsITransaction *u1, *u2;
  nsITransaction *r1, *r2;

  /*******************************************************************
   *
   * Execute 20 transient transactions. Afterwards, we should still
   * have the same transaction on the undo stack:
   *
   *******************************************************************/

  u1 = u2 = r1 = r2 = 0;

  rv = mgr->PeekUndoStack(&u1);

  TEST_TXMGR_IF_RELEASE(u1); // Don't hold onto any references!

  if (NS_FAILED(rv)) {
    fail("Initial PeekUndoStack() failed. (%d)\n", rv);
    return rv;
  }

  rv = mgr->PeekRedoStack(&r1);

  TEST_TXMGR_IF_RELEASE(r1); // Don't hold onto any references!

  if (NS_FAILED(rv)) {
    fail("Initial PeekRedoStack() failed. (%d)\n", rv);
    return rv;
  }

  rv = mgr->BeginBatch(nullptr);
  if (NS_FAILED(rv)) {
    fail("BeginBatch(nullptr) failed. (%d)\n", rv);
    return rv;
  }

  for (i = 1; i <= 20; i++) {
    tximpl = factory->create(mgr, TRANSIENT_FLAG);

    if (!tximpl) {
      fail("Failed to allocate transaction %d.\n", i);
      return NS_ERROR_OUT_OF_MEMORY;
    }

    tx = 0;
    rv = tximpl->QueryInterface(NS_GET_IID(nsITransaction), (void **)&tx);
    if (NS_FAILED(rv)) {
      fail("QueryInterface() failed for transaction %d. (%d)\n",
           i, rv);
      return rv;
    }

    rv = mgr->DoTransaction(tx);
    if (NS_FAILED(rv)) {
      fail("Failed to execute transaction %d. (%d)\n", i, rv);
      return rv;
    }

    tx->Release();
  }

  rv = mgr->EndBatch(false);
  if (NS_FAILED(rv)) {
    fail("EndBatch(false) failed. (%d)\n", rv);
    return rv;
  }

  rv = mgr->PeekUndoStack(&u2);

  TEST_TXMGR_IF_RELEASE(u2); // Don't hold onto any references!

  if (NS_FAILED(rv)) {
    fail("Second PeekUndoStack() failed. (%d)\n", rv);
    return rv;
  }

  if (u1 != u2) {
    fail("Top of undo stack changed. (%d)\n", rv);
    return NS_ERROR_FAILURE;
  }

  rv = mgr->PeekRedoStack(&r2);

  TEST_TXMGR_IF_RELEASE(r2); // Don't hold onto any references!

  if (NS_FAILED(rv)) {
    fail("Second PeekRedoStack() failed. (%d)\n", rv);
    return rv;
  }

  if (r1 != r2) {
    fail("Top of redo stack changed. (%d)\n", rv);
    return NS_ERROR_FAILURE;
  }

  rv = mgr->GetNumberOfUndoItems(&numitems);
  if (NS_FAILED(rv)) {
    fail("GetNumberOfUndoItems() on undo stack with 1 item failed. (%d)\n",
         rv);
    return rv;
  }

  if (numitems != 1) {
    fail("GetNumberOfUndoItems() expected 1 got %d. (%d)\n",
         numitems, rv);
    return NS_ERROR_FAILURE;
  }

  rv = mgr->GetNumberOfRedoItems(&numitems);

  if (NS_FAILED(rv)) {
    fail("GetNumberOfRedoItems() on empty redo stack failed. (%d)\n",
         rv);
    return rv;
  }

  if (numitems) {
    fail("GetNumberOfRedoItems() expected 0 got %d. (%d)\n",
         numitems, rv);
    return NS_ERROR_FAILURE;
  }

  passed("Execute 20 batched transient transactions");

  /*******************************************************************
   *
   * Test nested batching. Afterwards, we should have 2 transactions
   * on the undo stack:
   *
   *******************************************************************/

  rv = mgr->BeginBatch(nullptr);
  if (NS_FAILED(rv)) {
    fail("BeginBatch(nullptr) failed. (%d)\n", rv);
    return rv;
  }

  tximpl = factory->create(mgr, NONE_FLAG);

  if (!tximpl) {
    fail("Failed to allocate transaction.\n");
    return NS_ERROR_OUT_OF_MEMORY;
  }

  tx = 0;
  rv = tximpl->QueryInterface(NS_GET_IID(nsITransaction), (void **)&tx);
  if (NS_FAILED(rv)) {
    fail("QueryInterface() failed for transaction. (%d)\n", rv);
    return rv;
  }

  rv = mgr->DoTransaction(tx);
  if (NS_FAILED(rv)) {
    fail("Failed to execute transaction. (%d)\n", rv);
    return rv;
  }

  tx->Release();

  rv = mgr->GetNumberOfUndoItems(&numitems);
  if (NS_FAILED(rv)) {
    fail("GetNumberOfUndoItems() on undo stack with 1 item failed. (%d)\n",
         rv);
    return rv;
  }

  if (numitems != 1) {
    fail("GetNumberOfUndoItems() expected 1 got %d. (%d)\n",
         numitems, rv);
    return NS_ERROR_FAILURE;
  }

  rv = mgr->BeginBatch(nullptr);
  if (NS_FAILED(rv)) {
    fail("BeginBatch(nullptr) failed. (%d)\n", rv);
    return rv;
  }

  tximpl = factory->create(mgr, NONE_FLAG);

  if (!tximpl) {
    fail("Failed to allocate transaction.\n");
    return NS_ERROR_OUT_OF_MEMORY;
  }

  tx = 0;
  rv = tximpl->QueryInterface(NS_GET_IID(nsITransaction), (void **)&tx);
  if (NS_FAILED(rv)) {
    fail("QueryInterface() failed for transaction. (%d)\n", rv);
    return rv;
  }

  rv = mgr->DoTransaction(tx);
  if (NS_FAILED(rv)) {
    fail("Failed to execute transaction. (%d)\n", rv);
    return rv;
  }

  tx->Release();

  rv = mgr->GetNumberOfUndoItems(&numitems);
  if (NS_FAILED(rv)) {
    fail("GetNumberOfUndoItems() on undo stack with 1 item failed. (%d)\n",
         rv);
    return rv;
  }

  if (numitems != 1) {
    fail("GetNumberOfUndoItems() expected 1 got %d. (%d)\n",
         numitems, rv);
    return NS_ERROR_FAILURE;
  }

  rv = mgr->BeginBatch(nullptr);
  if (NS_FAILED(rv)) {
    fail("BeginBatch(nullptr) failed. (%d)\n", rv);
    return rv;
  }

  tximpl = factory->create(mgr, NONE_FLAG);

  if (!tximpl) {
    fail("Failed to allocate transaction.\n");
    return NS_ERROR_OUT_OF_MEMORY;
  }

  tx = 0;
  rv = tximpl->QueryInterface(NS_GET_IID(nsITransaction), (void **)&tx);
  if (NS_FAILED(rv)) {
    fail("QueryInterface() failed for transaction. (%d)\n", rv);
    return rv;
  }

  rv = mgr->DoTransaction(tx);
  if (NS_FAILED(rv)) {
    fail("Failed to execute transaction. (%d)\n", rv);
    return rv;
  }

  tx->Release();

  rv = mgr->GetNumberOfUndoItems(&numitems);
  if (NS_FAILED(rv)) {
    fail("GetNumberOfUndoItems() on undo stack with 1 item failed. (%d)\n",
         rv);
    return rv;
  }

  if (numitems != 1) {
    fail("GetNumberOfUndoItems() expected 1 got %d. (%d)\n",
         numitems, rv);
    return NS_ERROR_FAILURE;
  }

  rv = mgr->EndBatch(false);
  if (NS_FAILED(rv)) {
    fail("EndBatch(false) failed. (%d)\n", rv);
    return rv;
  }

  rv = mgr->EndBatch(false);
  if (NS_FAILED(rv)) {
    fail("EndBatch(false) failed. (%d)\n", rv);
    return rv;
  }

  rv = mgr->EndBatch(false);
  if (NS_FAILED(rv)) {
    fail("EndBatch(false) failed. (%d)\n", rv);
    return rv;
  }

  rv = mgr->GetNumberOfUndoItems(&numitems);
  if (NS_FAILED(rv)) {
    fail("GetNumberOfUndoItems() on undo stack with 2 items failed. (%d)\n",
         rv);
    return rv;
  }

  if (numitems != 2) {
    fail("GetNumberOfUndoItems() expected 2 got %d. (%d)\n",
         numitems, rv);
    return NS_ERROR_FAILURE;
  }

  passed("Test nested batched transactions");

  /*******************************************************************
   *
   * Undo 2 batch transactions. Afterwards, we should have 0
   * transactions on the undo stack and 2 on the redo stack.
   *
   *******************************************************************/

  for (i = 1; i <= 2; ++i) {
    rv = mgr->UndoTransaction();
    if (NS_FAILED(rv)) {
      fail("Failed to undo transaction %d. (%d)\n", i, rv);
      return rv;
    }
  }

  rv = mgr->GetNumberOfUndoItems(&numitems);
  if (NS_FAILED(rv)) {
    fail("GetNumberOfUndoItems() on empty undo stack failed. (%d)\n",
         rv);
    return rv;
  }

  if (numitems) {
    fail("GetNumberOfUndoItems() expected 0 got %d. (%d)\n",
         numitems, rv);
    return NS_ERROR_FAILURE;
  }

  rv = mgr->GetNumberOfRedoItems(&numitems);
  if (NS_FAILED(rv)) {
    fail("GetNumberOfRedoItems() on redo stack with 2 items failed. (%d)\n",
         rv);
    return rv;
  }

  if (numitems != 2) {
    fail("GetNumberOfRedoItems() expected 2 got %d. (%d)\n",
         numitems, rv);
    return NS_ERROR_FAILURE;
  }

  passed("Undo 2 batch transactions");

  /*******************************************************************
   *
   * Redo 2 batch transactions. Afterwards, we should have 2
   * transactions on the undo stack and 0 on the redo stack.
   *
   *******************************************************************/

  for (i = 1; i <= 2; ++i) {
    rv = mgr->RedoTransaction();
    if (NS_FAILED(rv)) {
      fail("Failed to undo transaction %d. (%d)\n", i, rv);
      return rv;
    }
  }

  rv = mgr->GetNumberOfUndoItems(&numitems);
  if (NS_FAILED(rv)) {
    fail("GetNumberOfUndoItems() on undo stack with 2 items failed. (%d)\n",
         rv);
    return rv;
  }

  if (numitems != 2) {
    fail("GetNumberOfUndoItems() expected 2 got %d. (%d)\n",
         numitems, rv);
    return NS_ERROR_FAILURE;
  }

  rv = mgr->GetNumberOfRedoItems(&numitems);
  if (NS_FAILED(rv)) {
    fail("GetNumberOfRedoItems() on empty redo stack failed. (%d)\n",
         rv);
    return rv;
  }

  if (numitems) {
    fail("GetNumberOfRedoItems() expected 0 got %d. (%d)\n",
         numitems, rv);
    return NS_ERROR_FAILURE;
  }

  passed("Redo 2 batch transactions");

  /*******************************************************************
   *
   * Call undo. Afterwards, we should have 1 transaction
   * on the undo stack, and 1 on the redo stack:
   *
   *******************************************************************/

  rv = mgr->UndoTransaction();
  if (NS_FAILED(rv)) {
    fail("Failed to undo transaction. (%d)\n", rv);
    return rv;
  }

  rv = mgr->GetNumberOfUndoItems(&numitems);

  if (NS_FAILED(rv)) {
    fail("GetNumberOfUndoItems() on undo stack with 1 item failed. (%d)\n",
         rv);
    return rv;
  }

  if (numitems != 1) {
    fail("GetNumberOfUndoItems() expected 1 got %d. (%d)\n",
         numitems, rv);
    return NS_ERROR_FAILURE;
  }

  rv = mgr->GetNumberOfRedoItems(&numitems);
  if (NS_FAILED(rv)) {
    fail("GetNumberOfRedoItems() on stack with 1 item failed. (%d)\n",
         rv);
    return rv;
  }

  if (numitems != 1) {
    fail("GetNumberOfRedoItems() expected 1 got %d. (%d)\n",
         numitems, rv);
    return NS_ERROR_FAILURE;
  }

  passed("Undo a batched transaction that was redone");

  /*******************************************************************
   *
   * Make sure an unbalanced call to EndBatch(false) throws an error and
   * doesn't affect the undo and redo stacks!
   *
   *******************************************************************/

  rv = mgr->EndBatch(false);
  if (rv != NS_ERROR_FAILURE) {
    fail("EndBatch(false) returned unexpected status. (%d)\n", rv);
    return rv;
  }

  rv = mgr->GetNumberOfUndoItems(&numitems);
  if (NS_FAILED(rv)) {
    fail("GetNumberOfUndoItems() on undo stack with 1 item failed. (%d)\n",
         rv);
    return rv;
  }

  if (numitems != 1) {
    fail("GetNumberOfUndoItems() expected 1 got %d. (%d)\n",
         numitems, rv);
    return NS_ERROR_FAILURE;
  }

  rv = mgr->GetNumberOfRedoItems(&numitems);
  if (NS_FAILED(rv)) {
    fail("GetNumberOfRedoItems() on stack with 1 item failed. (%d)\n",
         rv);
    return rv;
  }

  if (numitems != 1) {
    fail("GetNumberOfRedoItems() expected 1 got %d. (%d)\n",
         numitems, rv);
    return NS_ERROR_FAILURE;
  }

  passed("Test effect of unbalanced EndBatch(false) on undo and redo stacks");

  /*******************************************************************
   *
   * Make sure that an empty batch is not added to the undo stack
   * when it is closed, and that it does not affect the undo and redo
   * stacks.
   *
   *******************************************************************/

  rv = mgr->BeginBatch(nullptr);
  if (NS_FAILED(rv)) {
    fail("BeginBatch(nullptr) failed. (%d)\n", rv);
    return rv;
  }

  rv = mgr->GetNumberOfUndoItems(&numitems);
  if (NS_FAILED(rv)) {
    fail("GetNumberOfUndoItems() on undo stack with 1 item failed. (%d)\n",
         rv);
    return rv;
  }

  if (numitems != 1) {
    fail("GetNumberOfUndoItems() expected 1 got %d. (%d)\n",
         numitems, rv);
    return NS_ERROR_FAILURE;
  }

  rv = mgr->GetNumberOfRedoItems(&numitems);
  if (NS_FAILED(rv)) {
    fail("GetNumberOfRedoItems() on stack with 1 item failed. (%d)\n",
         rv);
    return rv;
  }

  if (numitems != 1) {
    fail("GetNumberOfRedoItems() expected 1 got %d. (%d)\n",
         numitems, rv);
    return NS_ERROR_FAILURE;
  }

  rv = mgr->EndBatch(false);
  if (NS_FAILED(rv)) {
    fail("EndBatch(false) failed. (%d)\n", rv);
    return rv;
  }

  rv = mgr->GetNumberOfUndoItems(&numitems);
  if (NS_FAILED(rv)) {
    fail("GetNumberOfUndoItems() on undo stack with 1 item failed. (%d)\n",
         rv);
    return rv;
  }

  if (numitems != 1) {
    fail("GetNumberOfUndoItems() expected 1 got %d. (%d)\n",
         numitems, rv);
    return NS_ERROR_FAILURE;
  }

  rv = mgr->GetNumberOfRedoItems(&numitems);
  if (NS_FAILED(rv)) {
    fail("GetNumberOfRedoItems() on stack with 1 item failed. (%d)\n",
         rv);
    return rv;
  }

  if (numitems != 1) {
    fail("GetNumberOfRedoItems() expected 1 got %d. (%d)\n",
         numitems, rv);
    return NS_ERROR_FAILURE;
  }

  passed("Test effect of empty batch on undo and redo stacks");

  /*******************************************************************
   *
   * Execute a new transaction. The redo stack should get pruned!
   *
   *******************************************************************/

  rv = mgr->BeginBatch(nullptr);
  if (NS_FAILED(rv)) {
    fail("BeginBatch(nullptr) failed. (%d)\n", rv);
    return rv;
  }

  for (i = 1; i <= 20; i++) {
    tximpl = factory->create(mgr, NONE_FLAG);

    if (!tximpl) {
      fail("Failed to allocate transaction %d.\n", i);
      return NS_ERROR_OUT_OF_MEMORY;
    }

    tx = 0;
    rv = tximpl->QueryInterface(NS_GET_IID(nsITransaction), (void **)&tx);
    if (NS_FAILED(rv)) {
      fail("QueryInterface() failed for transaction %d. (%d)\n",
           i, rv);
      return rv;
    }

    rv = mgr->DoTransaction(tx);
    if (NS_FAILED(rv)) {
      fail("Failed to execute transaction %d. (%d)\n", i, rv);
      return rv;
    }

    tx->Release();
  }

  rv = mgr->GetNumberOfUndoItems(&numitems);
  if (NS_FAILED(rv)) {
    fail("GetNumberOfUndoItems() on undo stack with 1 item failed. (%d)\n",
         rv);
    return rv;
  }

  if (numitems != 1) {
    fail("GetNumberOfUndoItems() expected 1 got %d. (%d)\n",
         numitems, rv);
    return NS_ERROR_FAILURE;
  }

  rv = mgr->GetNumberOfRedoItems(&numitems);
  if (NS_FAILED(rv)) {
    fail("GetNumberOfRedoItems() on redo stack with 1 item failed. (%d)\n",
         rv);
    return rv;
  }

  if (numitems != 1) {
    fail("GetNumberOfRedoItems() expected 1 got %d. (%d)\n",
         numitems, rv);
    return NS_ERROR_FAILURE;
  }

  rv = mgr->EndBatch(false);
  if (NS_FAILED(rv)) {
    fail("EndBatch(false) failed. (%d)\n", rv);
    return rv;
  }

  rv = mgr->GetNumberOfUndoItems(&numitems);
  if (NS_FAILED(rv)) {
    fail("GetNumberOfUndoItems() on undo stack with 2 items failed. (%d)\n",
         rv);
    return rv;
  }

  if (numitems != 2) {
    fail("GetNumberOfUndoItems() expected 2 got %d. (%d)\n",
         numitems, rv);
    return NS_ERROR_FAILURE;
  }

  rv = mgr->GetNumberOfRedoItems(&numitems);
  if (NS_FAILED(rv)) {
    fail("GetNumberOfRedoItems() on empty redo stack failed. (%d)\n",
         rv);
    return rv;
  }

  if (numitems) {
    fail("GetNumberOfRedoItems() expected 0 got %d. (%d)\n",
         numitems, rv);
    return NS_ERROR_FAILURE;
  }

  passed("Check if new batched transactions prune the redo stack");

  /*******************************************************************
   *
   * Call undo.
   *
   *******************************************************************/

  // Move a transaction over to the redo stack, so that we have one
  // transaction on the undo stack, and one on the redo stack!

  rv = mgr->UndoTransaction();
  if (NS_FAILED(rv)) {
    fail("Failed to undo transaction. (%d)\n", rv);
    return rv;
  }

  rv = mgr->GetNumberOfUndoItems(&numitems);
  if (NS_FAILED(rv)) {
    fail("GetNumberOfUndoItems() on undo stack with 1 item failed. (%d)\n",
         rv);
    return rv;
  }

  if (numitems != 1) {
    fail("GetNumberOfUndoItems() expected 1 got %d. (%d)\n",
         numitems, rv);
    return NS_ERROR_FAILURE;
  }

  rv = mgr->GetNumberOfRedoItems(&numitems);
  if (NS_FAILED(rv)) {
    fail("GetNumberOfRedoItems() on redo stack with 1 item failed. (%d)\n",
         rv);
    return rv;
  }

  if (numitems != 1) {
    fail("GetNumberOfRedoItems() expected 1 got %d. (%d)\n",
         numitems, rv);
    return NS_ERROR_FAILURE;
  }

  passed("Call undo");

  /*******************************************************************
   *
   * Test transaction DoTransaction() error:
   *
   *******************************************************************/

  tximpl = factory->create(mgr, THROWS_DO_ERROR_FLAG);

  if (!tximpl) {
    fail("Failed to allocate transaction.\n");
    return NS_ERROR_OUT_OF_MEMORY;
  }

  tx     = 0;

  rv = tximpl->QueryInterface(NS_GET_IID(nsITransaction), (void **)&tx);
  if (NS_FAILED(rv)) {
    fail("QueryInterface() failed for transaction. (%d)\n", rv);
    return rv;
  }

  u1 = u2 = r1 = r2 = 0;

  rv = mgr->PeekUndoStack(&u1);

  TEST_TXMGR_IF_RELEASE(u1); // Don't hold onto any references!

  if (NS_FAILED(rv)) {
    fail("Initial PeekUndoStack() failed. (%d)\n", rv);
    return rv;
  }

  rv = mgr->PeekRedoStack(&r1);

  TEST_TXMGR_IF_RELEASE(r1); // Don't hold onto any references!

  if (NS_FAILED(rv)) {
    fail("Initial PeekRedoStack() failed. (%d)\n", rv);
    return rv;
  }

  rv = mgr->BeginBatch(nullptr);
  if (NS_FAILED(rv)) {
    fail("BeginBatch(nullptr) failed. (%d)\n", rv);
    return rv;
  }

  rv = mgr->DoTransaction(tx);
  if (rv != NS_ERROR_FAILURE) {
    fail("DoTransaction() returned unexpected error. (%d)\n", rv);
    return rv;
  }

  tx->Release();

  rv = mgr->EndBatch(false);
  if (NS_FAILED(rv)) {
    fail("EndBatch(false) failed. (%d)\n", rv);
    return rv;
  }

  rv = mgr->PeekUndoStack(&u2);

  TEST_TXMGR_IF_RELEASE(u2); // Don't hold onto any references!

  if (NS_FAILED(rv)) {
    fail("Second PeekUndoStack() failed. (%d)\n", rv);
    return rv;
  }

  if (u1 != u2) {
    fail("Top of undo stack changed. (%d)\n", rv);
    return NS_ERROR_FAILURE;
  }

  rv = mgr->PeekRedoStack(&r2);

  TEST_TXMGR_IF_RELEASE(r2); // Don't hold onto any references!

  if (NS_FAILED(rv)) {
    fail("Second PeekRedoStack() failed. (%d)\n", rv);
    return rv;
  }

  if (r1 != r2) {
    fail("Top of redo stack changed. (%d)\n", rv);
    return NS_ERROR_FAILURE;
  }

  rv = mgr->GetNumberOfUndoItems(&numitems);
  if (NS_FAILED(rv)) {
    fail("GetNumberOfUndoItems() on undo stack with 1 item failed. (%d)\n",
         rv);
    return rv;
  }

  if (numitems != 1) {
    fail("GetNumberOfUndoItems() expected 1 got %d. (%d)\n",
         numitems, rv);
    return NS_ERROR_FAILURE;
  }

  rv = mgr->GetNumberOfRedoItems(&numitems);
  if (NS_FAILED(rv)) {
    fail("GetNumberOfRedoItems() on redo stack with 1 item failed. (%d)\n",
         rv);
    return rv;
  }

  if (numitems != 1) {
    fail("GetNumberOfRedoItems() expected 1 got %d. (%d)\n",
         numitems, rv);
    return NS_ERROR_FAILURE;
  }

  passed("Test transaction DoTransaction() error");

  /*******************************************************************
   *
   * Test transaction UndoTransaction() error:
   *
   *******************************************************************/

  tximpl = factory->create(mgr, THROWS_UNDO_ERROR_FLAG);

  if (!tximpl) {
    fail("Failed to allocate transaction.\n");
    return NS_ERROR_OUT_OF_MEMORY;
  }

  tx     = 0;

  rv = tximpl->QueryInterface(NS_GET_IID(nsITransaction), (void **)&tx);
  if (NS_FAILED(rv)) {
    fail("QueryInterface() failed for transaction. (%d)\n", rv);
    return rv;
  }

  rv = mgr->BeginBatch(nullptr);
  if (NS_FAILED(rv)) {
    fail("BeginBatch(nullptr) failed. (%d)\n", rv);
    return rv;
  }

  rv = mgr->DoTransaction(tx);
  if (NS_FAILED(rv)) {
    fail("DoTransaction() returned unexpected error. (%d)\n", rv);
    return rv;
  }

  tx->Release();

  rv = mgr->EndBatch(false);
  if (NS_FAILED(rv)) {
    fail("EndBatch(false) failed. (%d)\n", rv);
    return rv;
  }

  u1 = u2 = r1 = r2 = 0;

  rv = mgr->PeekUndoStack(&u1);

  TEST_TXMGR_IF_RELEASE(u1); // Don't hold onto any references!

  if (NS_FAILED(rv)) {
    fail("Initial PeekUndoStack() failed. (%d)\n", rv);
    return rv;
  }

  rv = mgr->PeekRedoStack(&r1);

  TEST_TXMGR_IF_RELEASE(r1); // Don't hold onto any references!

  if (NS_FAILED(rv)) {
    fail("Initial PeekRedoStack() failed. (%d)\n", rv);
    return rv;
  }

  rv = mgr->UndoTransaction();
  if (rv != NS_ERROR_FAILURE) {
    fail("UndoTransaction() returned unexpected error. (%d)\n", rv);
    return rv;
  }

  rv = mgr->PeekUndoStack(&u2);

  TEST_TXMGR_IF_RELEASE(u2); // Don't hold onto any references!

  if (NS_FAILED(rv)) {
    fail("Second PeekUndoStack() failed. (%d)\n", rv);
    return rv;
  }

  if (u1 != u2) {
    fail("Top of undo stack changed. (%d)\n", rv);
    return NS_ERROR_FAILURE;
  }

  rv = mgr->PeekRedoStack(&r2);

  TEST_TXMGR_IF_RELEASE(r2); // Don't hold onto any references!

  if (NS_FAILED(rv)) {
    fail("Second PeekRedoStack() failed. (%d)\n", rv);
    return rv;
  }

  if (r1 != r2) {
    fail("Top of redo stack changed. (%d)\n", rv);
    return NS_ERROR_FAILURE;
  }

  rv = mgr->GetNumberOfUndoItems(&numitems);
  if (NS_FAILED(rv)) {
    fail("GetNumberOfUndoItems() on undo stack with 2 items failed. (%d)\n",
         rv);
    return rv;
  }

  if (numitems != 2) {
    fail("GetNumberOfUndoItems() expected 2 got %d. (%d)\n",
         numitems, rv);
    return NS_ERROR_FAILURE;
  }

  rv = mgr->GetNumberOfRedoItems(&numitems);
  if (NS_FAILED(rv)) {
    fail("GetNumberOfRedoItems() on empty redo stack. (%d)\n",
         rv);
    return rv;
  }

  if (numitems) {
    fail("GetNumberOfRedoItems() expected 0 got %d. (%d)\n",
         numitems, rv);
    return NS_ERROR_FAILURE;
  }

  passed("Test transaction UndoTransaction() error");

  /*******************************************************************
   *
   * Test transaction RedoTransaction() error:
   *
   *******************************************************************/

  tximpl = factory->create(mgr, THROWS_REDO_ERROR_FLAG);

  if (!tximpl) {
    fail("Failed to allocate transaction.\n");
    return NS_ERROR_OUT_OF_MEMORY;
  }

  tx     = 0;

  rv = tximpl->QueryInterface(NS_GET_IID(nsITransaction), (void **)&tx);
  if (NS_FAILED(rv)) {
    fail("QueryInterface() failed for RedoErrorTransaction. (%d)\n",
         rv);
    return rv;
  }

  rv = mgr->BeginBatch(nullptr);
  if (NS_FAILED(rv)) {
    fail("BeginBatch(nullptr) failed. (%d)\n", rv);
    return rv;
  }

  rv = mgr->DoTransaction(tx);
  if (NS_FAILED(rv)) {
    fail("DoTransaction() returned unexpected error. (%d)\n", rv);
    return rv;
  }

  tx->Release();

  rv = mgr->EndBatch(false);
  if (NS_FAILED(rv)) {
    fail("EndBatch(false) failed. (%d)\n", rv);
    return rv;
  }

  //
  // Execute a normal transaction to be used in a later test:
  //

  tximpl = factory->create(mgr, NONE_FLAG);

  if (!tximpl) {
    fail("Failed to allocate transaction.\n");
    return NS_ERROR_OUT_OF_MEMORY;
  }

  tx     = 0;

  rv = tximpl->QueryInterface(NS_GET_IID(nsITransaction), (void **)&tx);
  if (NS_FAILED(rv)) {
    fail("QueryInterface() failed for transaction. (%d)\n", rv);
    return rv;
  }

  rv = mgr->DoTransaction(tx);
  if (NS_FAILED(rv)) {
    fail("DoTransaction() returned unexpected error. (%d)\n", rv);
    return rv;
  }

  tx->Release();

  //
  // Undo the 2 transactions just executed.
  //

  for (i = 1; i <= 2; ++i) {
    rv = mgr->UndoTransaction();
    if (NS_FAILED(rv)) {
      fail("Failed to undo transaction %d. (%d)\n", i, rv);
      return rv;
    }
  }

  //
  // The RedoErrorTransaction should now be at the top of the redo stack!
  //

  u1 = u2 = r1 = r2 = 0;

  rv = mgr->PeekUndoStack(&u1);

  TEST_TXMGR_IF_RELEASE(u1); // Don't hold onto any references!

  if (NS_FAILED(rv)) {
    fail("Initial PeekUndoStack() failed. (%d)\n", rv);
    return rv;
  }

  rv = mgr->PeekRedoStack(&r1);

  TEST_TXMGR_IF_RELEASE(r1); // Don't hold onto any references!

  if (NS_FAILED(rv)) {
    fail("Initial PeekRedoStack() failed. (%d)\n", rv);
    return rv;
  }

  rv = mgr->RedoTransaction();
  if (rv != NS_ERROR_FAILURE) {
    fail("RedoTransaction() returned unexpected error. (%d)\n", rv);
    return rv;
  }

  rv = mgr->PeekUndoStack(&u2);

  TEST_TXMGR_IF_RELEASE(u2); // Don't hold onto any references!

  if (NS_FAILED(rv)) {
    fail("Second PeekUndoStack() failed. (%d)\n", rv);
    return rv;
  }

  if (u1 != u2) {
    fail("Top of undo stack changed. (%d)\n", rv);
    return NS_ERROR_FAILURE;
  }

  rv = mgr->PeekRedoStack(&r2);

  TEST_TXMGR_IF_RELEASE(r2); // Don't hold onto any references!

  if (NS_FAILED(rv)) {
    fail("Second PeekRedoStack() failed. (%d)\n", rv);
    return rv;
  }

  if (r1 != r2) {
    fail("Top of redo stack changed. (%d)\n", rv);
    return NS_ERROR_FAILURE;
  }

  rv = mgr->GetNumberOfUndoItems(&numitems);
  if (NS_FAILED(rv)) {
    fail("GetNumberOfUndoItems() on undo stack with 2 items failed. (%d)\n",
         rv);
    return rv;
  }

  if (numitems != 2) {
    fail("GetNumberOfUndoItems() expected 2 got %d. (%d)\n",
         numitems, rv);
    return NS_ERROR_FAILURE;
  }

  rv = mgr->GetNumberOfRedoItems(&numitems);
  if (NS_FAILED(rv)) {
    fail("GetNumberOfRedoItems() on redo stack with 2 items failed. (%d)\n",
         rv);
    return rv;
  }

  if (numitems != 2) {
    fail("GetNumberOfRedoItems() expected 2 got %d. (%d)\n",
         numitems, rv);
    return NS_ERROR_FAILURE;
  }

  passed("Test transaction RedoTransaction() error");

  /*******************************************************************
   *
   * Make sure that setting the transaction manager's max transaction
   * count to zero, clears both the undo and redo stacks, and executes
   * all new commands without pushing them on the undo stack!
   *
   *******************************************************************/

  rv = mgr->SetMaxTransactionCount(0);
  if (NS_FAILED(rv)) {
    fail("SetMaxTransactionCount(0) failed. (%d)\n", rv);
    return rv;
  }

  rv = mgr->GetNumberOfUndoItems(&numitems);
  if (NS_FAILED(rv)) {
    fail("GetNumberOfUndoItems() on empty undo stack failed. (%d)\n",
         rv);
    return rv;
  }

  if (numitems) {
    fail("GetNumberOfUndoItems() expected 0 got %d. (%d)\n",
         numitems, rv);
    return NS_ERROR_FAILURE;
  }

  rv = mgr->GetNumberOfRedoItems(&numitems);
  if (NS_FAILED(rv)) {
    fail("GetNumberOfRedoItems() on empty redo stack failed. (%d)\n",
         rv);
    return rv;
  }

  if (numitems) {
    fail("GetNumberOfRedoItems() expected 0 got %d. (%d)\n",
         numitems, rv);
    return NS_ERROR_FAILURE;
  }

  for (i = 1; i <= 20; i++) {
    tximpl = factory->create(mgr, NONE_FLAG);

    if (!tximpl) {
      fail("Failed to allocate transaction %d.\n", i);
      return NS_ERROR_OUT_OF_MEMORY;
    }

    tx = 0;
    rv = tximpl->QueryInterface(NS_GET_IID(nsITransaction), (void **)&tx);
    if (NS_FAILED(rv)) {
      fail("QueryInterface() failed for transaction %d. (%d)\n",
           i, rv);
      return rv;
    }

    rv = mgr->BeginBatch(nullptr);
    if (NS_FAILED(rv)) {
      fail("BeginBatch(nullptr) failed. (%d)\n", rv);
      return rv;
    }

    rv = mgr->DoTransaction(tx);
    if (NS_FAILED(rv)) {
      fail("Failed to execute transaction %d. (%d)\n", i, rv);
      return rv;
    }

    tx->Release();

    rv = mgr->EndBatch(false);
    if (NS_FAILED(rv)) {
      fail("EndBatch(false) failed. (%d)\n", rv);
      return rv;
    }

    rv = mgr->GetNumberOfUndoItems(&numitems);
    if (NS_FAILED(rv)) {
      fail("GetNumberOfUndoItems() on empty undo stack failed. (%d)\n",
           rv);
      return rv;
    }

    if (numitems) {
      fail("GetNumberOfUndoItems() expected 0 got %d. (%d)\n",
           numitems, rv);
      return NS_ERROR_FAILURE;
    }

    rv = mgr->GetNumberOfRedoItems(&numitems);
    if (NS_FAILED(rv)) {
      fail("GetNumberOfRedoItems() on empty redo stack failed. (%d)\n",
           rv);
      return rv;
    }

    if (numitems) {
      fail("GetNumberOfRedoItems() expected 0 got %d. (%d)\n",
           numitems, rv);
      return NS_ERROR_FAILURE;
    }
  }

  passed("Test max transaction count of zero");

  /*******************************************************************
   *
   * Release the transaction manager. Any transactions on the undo
   * and redo stack should automatically be released:
   *
   *******************************************************************/

  rv = mgr->SetMaxTransactionCount(-1);
  if (NS_FAILED(rv)) {
    fail("SetMaxTransactionCount(0) failed. (%d)\n", rv);
    return rv;
  }

  // Push 20 transactions on the undo stack:

  for (i = 1; i <= 20; i++) {
    tximpl = factory->create(mgr, NONE_FLAG);

    if (!tximpl) {
      fail("Failed to allocate transaction %d.\n", i);
      return NS_ERROR_OUT_OF_MEMORY;
    }

    tx = 0;
    rv = tximpl->QueryInterface(NS_GET_IID(nsITransaction), (void **)&tx);
    if (NS_FAILED(rv)) {
      fail("QueryInterface() failed for transaction %d. (%d)\n",
           i, rv);
      return rv;
    }

    rv = mgr->BeginBatch(nullptr);
    if (NS_FAILED(rv)) {
      fail("BeginBatch(nullptr) failed. (%d)\n", rv);
      return rv;
    }

    rv = mgr->DoTransaction(tx);
    if (NS_FAILED(rv)) {
      fail("Failed to execute transaction %d. (%d)\n", i, rv);
      return rv;
    }

    tx->Release();

    rv = mgr->EndBatch(false);
    if (NS_FAILED(rv)) {
      fail("EndBatch(false) failed. (%d)\n", rv);
      return rv;
    }

    rv = mgr->GetNumberOfUndoItems(&numitems);
    if (NS_FAILED(rv)) {
      fail("GetNumberOfUndoItems() on undo stack with %d items failed. (%d)\n",
           i, rv);
      return rv;
    }

    if (numitems != i) {
      fail("GetNumberOfUndoItems() expected %d got %d. (%d)\n",
           i, numitems, rv);
      return NS_ERROR_FAILURE;
    }

    rv = mgr->GetNumberOfRedoItems(&numitems);
    if (NS_FAILED(rv)) {
      fail("GetNumberOfRedoItems() on empty redo stack failed. (%d)\n",
           rv);
      return rv;
    }

    if (numitems) {
      fail("GetNumberOfRedoItems() expected 0 got %d. (%d)\n",
           numitems, rv);
      return NS_ERROR_FAILURE;
    }
  }

  for (i = 1; i <= 10; i++) {
    rv = mgr->UndoTransaction();
    if (NS_FAILED(rv)) {
      fail("Failed to undo transaction %d. (%d)\n", i, rv);
      return rv;
    }
  }

  rv = mgr->GetNumberOfUndoItems(&numitems);
  if (NS_FAILED(rv)) {
    fail("GetNumberOfUndoItems() on empty undo stack with 10 items failed. (%d)\n",
         rv);
    return rv;
  }

  if (numitems != 10) {
    fail("GetNumberOfUndoItems() expected 10 got %d. (%d)\n",
         numitems, rv);
    return NS_ERROR_FAILURE;
  }

  rv = mgr->GetNumberOfRedoItems(&numitems);
  if (NS_FAILED(rv)) {
    fail("GetNumberOfRedoItems() on redo stack with 10 items failed. (%d)\n",
         rv);
    return rv;
  }

  if (numitems != 10) {
    fail("GetNumberOfRedoItems() expected 10 got %d. (%d)\n",
         numitems, rv);
    return NS_ERROR_FAILURE;
  }

  rv = mgr->Clear();
  if (NS_FAILED(rv)) {
    fail("Clear() failed. (%d)\n", rv);
    return rv;
  }

  passed("Release the transaction manager");

  /*******************************************************************
   *
   * Make sure number of transactions created matches number of
   * transactions destroyed!
   *
   *******************************************************************/

  /* Disabled because the current cycle collector doesn't delete
     cycle collectable objects synchronously.
  if (sConstructorCount != sDestructorCount) {
    fail("Transaction constructor count (%d) != destructor count (%d).\n",
         sConstructorCount, sDestructorCount);
    return NS_ERROR_FAILURE;
  }*/

  passed("Number of transactions created and destroyed match");
  passed("%d transactions processed during quick batch test",
         sConstructorCount);

  return NS_OK;
}

nsresult
simple_batch_test()
{
  /*******************************************************************
   *
   * Initialize globals for test.
   *
   *******************************************************************/
  reset_globals();
  sDestructorOrderArr = sSimpleBatchTestDestructorOrderArr;
  sDoOrderArr         = sSimpleBatchTestDoOrderArr;
  sUndoOrderArr       = sSimpleBatchTestUndoOrderArr;
  sRedoOrderArr       = sSimpleBatchTestRedoOrderArr;

  /*******************************************************************
   *
   * Run the quick batch test.
   *
   *******************************************************************/

  printf("\n-----------------------------------------------------\n");
  printf("- Begin Batch Transaction Test:\n");
  printf("-----------------------------------------------------\n");

  SimpleTransactionFactory factory;

  return quick_batch_test(&factory);
}

nsresult
aggregation_batch_test()
{
  /*******************************************************************
   *
   * Initialize globals for test.
   *
   *******************************************************************/

  reset_globals();
  sDestructorOrderArr = sAggregateBatchTestDestructorOrderArr;
  sDoOrderArr         = sAggregateBatchTestDoOrderArr;
  sUndoOrderArr       = sAggregateBatchTestUndoOrderArr;
  sRedoOrderArr       = sAggregateBatchTestRedoOrderArr;

  /*******************************************************************
   *
   * Run the quick batch test.
   *
   *******************************************************************/

  printf("\n-----------------------------------------------------\n");
  printf("- Begin Batch Aggregate Transaction Test:\n");
  printf("-----------------------------------------------------\n");

  AggregateTransactionFactory factory(3, 2, BATCH_FLAG);

  return quick_batch_test(&factory);
}

/**
 * Create 'iterations * (iterations + 1) / 2' transactions;
 * do/undo/redo/undo them.
 **/
nsresult
stress_test(TestTransactionFactory *factory, int32_t iterations)
{
  printf("Stress test of %i iterations (may take a while) ... ", iterations);
  fflush(stdout);

  /*******************************************************************
   *
   * Create a transaction manager:
   *
   *******************************************************************/

  nsresult rv;
  nsCOMPtr<nsITransactionManager> mgr =
    do_CreateInstance(NS_TRANSACTIONMANAGER_CONTRACTID, &rv);
  if (NS_FAILED(rv) || !mgr) {
    fail("Failed to create Transaction Manager instance.\n");
    return NS_ERROR_OUT_OF_MEMORY;
  }

  int32_t i, j;
  nsITransaction *tx;

  for (i = 1; i <= iterations; i++) {
    /*******************************************************************
     *
     * Create and execute a bunch of transactions:
     *
     *******************************************************************/

    for (j = 1; j <= i; j++) {
      TestTransaction *tximpl = factory->create(mgr, NONE_FLAG);

      if (!tximpl) {
        fail("Failed to allocate transaction %d-%d.\n", i, j);
        return NS_ERROR_OUT_OF_MEMORY;
      }

      tx = 0;
      rv = tximpl->QueryInterface(NS_GET_IID(nsITransaction), (void **)&tx);
      if (NS_FAILED(rv)) {
        fail("QueryInterface() failed for transaction %d-%d. (%d)\n",
             i, j, rv);
        return rv;
      }

      rv = mgr->DoTransaction(tx);
      if (NS_FAILED(rv)) {
        fail("Failed to execute transaction %d-%d. (%d)\n",
             i, j, rv);
        return rv;
      }

      tx->Release();
    }

    /*******************************************************************
     *
     * Undo all the transactions:
     *
     *******************************************************************/

    for (j = 1; j <= i; j++) {
      rv = mgr->UndoTransaction();
      if (NS_FAILED(rv)) {
        fail("Failed to undo transaction %d-%d. (%d)\n", i, j, rv);
        return rv;
      }
    }

    /*******************************************************************
     *
     * Redo all the transactions:
     *
     *******************************************************************/

    for (j = 1; j <= i; j++) {
      rv = mgr->RedoTransaction();
      if (NS_FAILED(rv)) {
        fail("Failed to redo transaction %d-%d. (%d)\n", i, j, rv);
        return rv;
      }
    }

    /*******************************************************************
     *
     * Undo all the transactions again so that they all end up on
     * the redo stack for pruning the next time we execute a new
     * transaction
     *
     *******************************************************************/

    for (j = 1; j <= i; j++) {
      rv = mgr->UndoTransaction();
      if (NS_FAILED(rv)) {
        fail("Failed to undo transaction %d-%d. (%d)\n", i, j, rv);
        return rv;
      }
    }

    // Trivial feedback not to let the user think the test is stuck.
    if (MOZ_UNLIKELY(j % 100 == 0)) {
      printf("%i ", j);
    }
  } // for, iterations.

  printf("passed\n");

  rv = mgr->Clear();
  if (NS_FAILED(rv)) {
    fail("Clear() failed. (%d)\n", rv);
    return rv;
  }

  /* Disabled because the current cycle collector doesn't delete
     cycle collectable objects synchronously.
  if (sConstructorCount != sDestructorCount) {
    fail("Transaction constructor count (%d) != destructor count (%d).\n",
         sConstructorCount, sDestructorCount);
    return NS_ERROR_FAILURE;
  }*/

  passed("%d transactions processed during stress test", sConstructorCount);

  return NS_OK;
}

nsresult
simple_stress_test()
{
  /*******************************************************************
   *
   * Initialize globals for test.
   *
   *******************************************************************/

  reset_globals();

  /*******************************************************************
   *
   * Do the stress test:
   *
   *******************************************************************/

  printf("\n-----------------------------------------------------\n");
  printf("- Simple Transaction Stress Test:\n");
  printf("-----------------------------------------------------\n");

  SimpleTransactionFactory factory;

  int32_t iterations =
#ifdef DEBUG
  10
#else
  //
  // 1500 iterations sends 1,125,750 transactions through the system!!
  //
  1500
#endif
  ;
  return stress_test(&factory, iterations);
}

nsresult
aggregation_stress_test()
{
  /*******************************************************************
   *
   * Initialize globals for test.
   *
   *******************************************************************/

  reset_globals();

  /*******************************************************************
   *
   * Do the stress test:
   *
   *******************************************************************/

  printf("\n-----------------------------------------------------\n");
  printf("- Aggregate Transaction Stress Test:\n");
  printf("-----------------------------------------------------\n");

  AggregateTransactionFactory factory(3, 4);

  int32_t iterations =
#ifdef DEBUG
  10
#else
  //
  // 500 iterations sends 2,630,250 transactions through the system!!
  //
  500
#endif
  ;
  return stress_test(&factory, iterations);
}

nsresult
aggregation_batch_stress_test()
{
  /*******************************************************************
   *
   * Initialize globals for test.
   *
   *******************************************************************/

  reset_globals();

  /*******************************************************************
   *
   * Do the stress test:
   *
   *******************************************************************/

  printf("\n-----------------------------------------------------\n");
  printf("- Aggregate Batch Transaction Stress Test:\n");
  printf("-----------------------------------------------------\n");

  AggregateTransactionFactory factory(3, 4, BATCH_FLAG);

  int32_t iterations =
#ifdef DEBUG
  10
#else
#if defined(MOZ_ASAN) || defined(MOZ_WIDGET_ANDROID)
  // See Bug 929985: 500 is too many for ASAN and Android, 100 is safe.
  100
#else
  //
  // 500 iterations sends 2,630,250 transactions through the system!!
  //
  500
#endif
#endif
  ;
  return stress_test(&factory, iterations);
}

int
main (int argc, char *argv[])
{
  ScopedXPCOM xpcom("nsITransactionManager");
  if (xpcom.failed()) {
    return 1;
  }

  //
  // quick_test() part:
  //

  nsresult rv = simple_test();
  NS_ENSURE_SUCCESS(rv, 1);

  rv = aggregation_test();
  NS_ENSURE_SUCCESS(rv, 1);

  //
  // quick_batch_test() part:
  //

  rv = simple_batch_test();
  NS_ENSURE_SUCCESS(rv, 1);

  rv = aggregation_batch_test();
  NS_ENSURE_SUCCESS(rv, 1);

  //
  // stress_test() part:
  //

  rv = simple_stress_test();
  NS_ENSURE_SUCCESS(rv, 1);

  rv = aggregation_stress_test();
  NS_ENSURE_SUCCESS(rv, 1);

  rv = aggregation_batch_stress_test();
  NS_ENSURE_SUCCESS(rv, 1);

  return 0;
}
